{"id":40984,"date":"2025-05-30T12:27:10","date_gmt":"2025-05-30T04:27:10","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/40984.html"},"modified":"2025-05-30T12:27:10","modified_gmt":"2025-05-30T04:27:10","slug":"%e3%80%90c%e3%80%91unordered_map%e4%b8%8eset%e7%9a%84%e6%a8%a1%e6%8b%9f%e5%ae%9e%e7%8e%b0","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/40984.html","title":{"rendered":"\u3010C++\u3011unordered_map\u4e0eset\u7684\u6a21\u62df\u5b9e\u73b0"},"content":{"rendered":"<h3>unordered\u7cfb\u5217map\u548cset&#xff0c;\u4e0e\u666e\u901a\u533a\u522b<\/h3>\n<p>\u7528\u6cd5\u51e0\u4e4e\u76f8\u540c&#xff0c;\u952e\u503c\u552f\u4e00&#xff0c;\u533a\u522bunordered\u7cfb\u5217\u8fed\u4ee3\u5668\u662f\u5355\u5411\u7684\u5e76\u4e14\u904d\u5386\u51fa\u6765\u4e0d\u662f\u6709\u5e8f\u7684\u3002unordered\u7cfb\u5217\u5728\u6570\u636e\u89c4\u6a21\u5927\u4e14\u65e0\u5e8f\u7684\u60c5\u51b5\u4e0b\u6027\u80fd\u66f4\u4f18<\/p>\n<p>\u5e95\u5c42\u5b9e\u73b0&#xff1a;<\/p>\n<p>map \u548c set &#xff1a;\u57fa\u4e8e\u5e73\u8861\u4e8c\u53c9\u6811&#xff08;\u901a\u5e38\u662f\u7ea2\u9ed1\u6811&#xff09;\u5b9e\u73b0&#xff0c;\u5143\u7d20\u5728\u6811\u4e2d\u6309\u6709\u5e8f\u7684\u65b9\u5f0f\u5b58\u50a8\u3002 unordered_map \u548c unordered_set &#xff1a;\u57fa\u4e8e\u54c8\u5e0c\u8868\u5b9e\u73b0&#xff0c;\u5143\u7d20\u5b58\u50a8\u5728\u54c8\u5e0c\u6876\u4e2d&#xff0c;\u5b58\u50a8\u987a\u5e8f\u4e0e\u63d2\u5165\u987a\u5e8f\u65e0\u5173\u3002\u662f\u901a\u8fc7\u54c8\u5e0c\u51fd\u6570\u5c06\u952e&#xff08;\u6216\u5143\u7d20&#xff09;\u6620\u5c04\u5230\u54c8\u5e0c\u8868\u7684\u6876\u7d22\u5f15<\/p>\n<p>\u6709\u5e8f\u6027&#xff1a;<\/p>\n<p>map\u548cset:\u6709\u5e8f&#xff0c;\u53ef\u6309\u81ea\u5b9a\u4e49\u6392\u5e8f\u89c4\u5219 unordered&#xff1a;\u65e0\u5e8f&#xff0c;\u5b58\u50a8\u987a\u5e8f\u53d6\u51b3\u4e8e\u54c8\u5e0c\u51fd\u6570\u548c\u54c8\u5e0c\u6876\u7684\u5206\u914d\u3002<\/p>\n<p>\u9002\u7528\u573a\u666f<\/p>\n<p>map \u548c set &#xff1a;\u9002\u7528\u4e8e\u9700\u8981\u5143\u7d20\u6709\u5e8f\u7684\u573a\u666f&#xff0c;\u5982\u6392\u5e8f\u3001\u8303\u56f4\u67e5\u8be2\u7b49unordered_map \u548c unordered_set &#xff1a;\u9002\u7528\u4e8e\u9700\u8981\u5feb\u901f\u63d2\u5165\u548c\u67e5\u627e\u7684\u573a\u666f&#xff0c;\u5bf9\u5143\u7d20\u7684\u987a\u5e8f\u6ca1\u6709\u8981\u6c42\u3002<\/p>\n<h3>1.\u54c8\u5e0c\u8868\u6539\u9020<\/h3>\n<p>\u6309\u7167\u4ee5\u4e0b\u601d\u8def\u8fdb\u884c\u6a21\u62df\u5b9e\u73b0 1\u3001\u6539\u88c5\u54c8\u5e0c\u8868(\u54c8\u5e0c\u6876) 2\u3001\u5c01\u88c5map\u548cset 3\u3001\u5b9e\u73b0\u666e\u901a\u8fed\u4ee3\u5668 4\u3001\u5b9e\u73b0const\u8fed\u4ee3\u5668 5\u3001\u89e3\u51b3insert\u8fd4\u56de\u503c\u95ee\u9898 \u5b9e\u73b0operator[] 6\u3001\u89e3\u51b3key\u4e0d\u80fd\u4fee\u6539\u7684\u95ee\u9898<\/p>\n<h4>\u8282\u70b9\u5b9a\u4e49<\/h4>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/05\/20250530042708-6839339c85222.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> \u7528\u4e00\u4e2a\u6a21\u677f\u53c2\u6570T\u6765\u8868\u793a\u6570\u636e&#xff0c;unordered_set\u4e3akey&#xff0c;map\u4e3apair&lt;K,V&gt;&#xff0c;\u5b9e\u73b0\u4e86\u6cdb\u578b\u3002<\/p>\n<h4>1.2\u589e\u52a0\u8fed\u4ee3\u5668<\/h4>\n<h5>\u57fa\u672c\u6a21\u677f<\/h5>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/05\/20250530042708-6839339c9e296.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> \u603b\u5171\u67096\u4e2a\u6a21\u677f\u53c2\u6570&#xff0c;K\u4ee3\u8868\u952e\u503c&#xff0c;T\u4ee3\u8868value\u503c\u7c7b\u578b\u80fd\u5b9e\u73b0map\u548cset\u7684\u6cdb\u578b&#xff0c;Ptr\u662f\u6307\u9488\u7c7b\u578b&#xff0c;Ref\u662f\u5f15\u7528\u7c7b\u578b&#xff0c;KeyOfT\u662f\u7528\u4e8e\u4ece\u503c\u4e2d\u83b7\u53d6\u952e\u503c\u7684\u51fd\u6570&#xff0c;HashFunc\u662f\u54c8\u5e0c\u51fd\u6570\u5c06\u952e\u503c\u6620\u5c04\u5230\u5730\u5740\u4e0a\u53bb 1.\u91cd\u5b9a\u4e49\u4e00\u4e2aself\u901a\u7528\u8fed\u4ee3\u5668&#xff0c;\u6a21\u677f\u53c2\u6570\u4e3aPtr\u548cRef\u53ef\u4ee5\u7075\u6d3b\u5730\u5b9a\u4e49\u6307\u9488\u548c\u5f15\u7528\u7c7b\u578b&#xff0c;\u901a\u5e38\u7528\u4e8e\u7c7b\u7684\u5185\u90e8\u5b9e\u73b0&#xff0c;\u5f15\u7528\u6216\u8fd4\u56de\u503c\u3002 2.\u91cd\u5b9a\u4e49\u4e00\u4e2a\u5177\u4f53\u7684\u8fed\u4ee3\u5668iterator&#xff0c;\u5176\u4e2d\u6307\u9488\u7c7b\u578b\u548c\u5f15\u7528\u7c7b\u578b\u90fd\u88ab\u5199\u6b7b\u4e0eT\u76f8\u540c&#xff0c;\u662f\u7528\u4e8e\u8bfb\u5199\u8bbf\u95ee\u7684\u8fed\u4ee3\u5668&#xff0c;\u53ef\u4ee5\u5bf9\u5bb9\u5668\u4e2d\u7684\u5143\u7d20\u8fdb\u884c\u4fee\u6539\u3002 3.\u9700\u5b9a\u4e49\u4e00\u4e2a\u54c8\u5e0c\u8868\u6307\u9488&#xff0c;\u56e0\u4e3a\u81ea\u589e\u64cd\u4f5c\u65f6\u53ef\u4ee5\u901a\u8fc7\u8be5\u6307\u9488\u65b9\u4fbf\u904d\u5386\u627e\u5230\u4e0b\u4e00\u4e2a\u54c8\u5e0c\u6876\u7684\u4f4d\u7f6e\u3002\u6709\u5982\u4e0b\u4f5c\u7528&#xff1a;<\/p>\n<p>a&#xff1a;\u63d0\u4f9b\u5bf9\u54c8\u5e0c\u8868\u8d44\u6e90\u7684\u8bbf\u95ee\u3002\u5982\u54c8\u5e0c\u6876\u6570\u7ec4 _table\u3001\u54c8\u5e0c\u51fd\u6570 hf \u548c\u952e\u63d0\u53d6\u51fd\u6570 kot b&#xff1a; \u5c01\u88c5\u54c8\u5e0c\u8868\u7684\u5b9e\u73b0\u7ec6\u8282\u3002\u4f7f\u54c8\u5e0c\u8868\u7684\u5185\u90e8\u5b9e\u73b0\u53ef\u4ee5\u5728\u4e0d\u6539\u53d8\u8fed\u4ee3\u5668\u4ee3\u7801\u7684\u60c5\u51b5\u4e0b\u8fdb\u884c\u4fee\u6539\u3002<\/p>\n<h5>\u6784\u9020\u51fd\u6570<\/h5>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/05\/20250530042708-6839339cce7e0.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> 1.\u5c06\u54c8\u5e0c\u8868\u6307\u9488\u5b9a\u4e49\u6210const&#xff0c;\u56e0\u4e3a\u5728const\u8fed\u4ee3\u5668begin\u548cend\u51fd\u6570\u4e2d\u8fd4\u56de\u7684this\u6307\u9488\u662fconst\u7684&#xff0c;\u666e\u901a\u6307\u9488\u4f20\u8fdb\u6765\u4e5f\u6ca1\u95ee\u9898&#xff0c;\u56e0\u4e3a\u6743\u9650\u53ef\u4ee5\u7f29\u5c0f\u4e0d\u80fd\u653e\u5927&#xff0c;\u6240\u4ee5\u76f4\u63a5\u5b9a\u4e49\u6210const\u7701\u7565\u6389\u666e\u901a\u54c8\u5e0c\u8868\u6307\u9488\u7684\u8fed\u4ee3\u5668\u6784\u9020 2.\u4e0eset\u548cmap\u6a21\u62df\u5b9e\u73b0\u4e2d\u7c7b\u4f3c&#xff0c;\u4e00\u4e3e\u4e24\u5f97&#xff0c;\u89e3\u51b3\u4e86\u8fd4\u56de\u503c\u4e2d\u975econst\u7684\u8fed\u4ee3\u5668\u8f6c\u5316\u6210const\u8fed\u4ee3\u5668\u7684\u8fc7\u7a0b\u3002\u56e0\u4e3aiterator\u7684\u6307\u9488\u548c\u5f15\u7528\u53c2\u6570\u5199\u6b7b\u4e86&#xff0c;\u5c31\u662f\u5e38\u91cf\u3002<\/p>\n<h5>\u81ea\u589e&#043;&#043;\u64cd\u4f5c<\/h5>\n<p>self<span class=\"token operator\">&amp;<\/span> <span class=\"token keyword\">operator<\/span><span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>_node<span class=\"token operator\">-&gt;<\/span>_next<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token comment\">\/\/\u5f53\u524d\u6876\u8fd8\u6ca1\u5b8c&#xff0c;\u7ee7\u7eed\u5f80\u4e0b\u904d\u5386<\/span><br \/>\n_node <span class=\"token operator\">&#061;<\/span> _node<span class=\"token operator\">-&gt;<\/span>_next<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">else<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\nKeyOfT kot<span class=\"token punctuation\">;<\/span><br \/>\nHashFunc hf<span class=\"token punctuation\">;<\/span><br \/>\nsize_t hashi <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">hf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token function\">kot<\/span><span class=\"token punctuation\">(<\/span>_node<span class=\"token operator\">-&gt;<\/span>_data<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">%<\/span> _pht<span class=\"token operator\">-&gt;<\/span>_table<span class=\"token punctuation\">.<\/span><span class=\"token function\">size<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/\/\u4ece\u4e0b\u4e00\u4e2a\u4f4d\u7f6e\u5bfb\u627e<\/span><br \/>\nhashi<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span>hashi <span class=\"token operator\">&lt;<\/span> _pht<span class=\"token operator\">-&gt;<\/span>_table<span class=\"token punctuation\">.<\/span><span class=\"token function\">size<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>_pht<span class=\"token operator\">-&gt;<\/span>_table<span class=\"token punctuation\">[<\/span>hashi<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n_node <span class=\"token operator\">&#061;<\/span> _pht<span class=\"token operator\">-&gt;<\/span>_table<span class=\"token punctuation\">[<\/span>hashi<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">return<\/span> <span class=\"token operator\">*<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">else<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\nhashi<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token comment\">\/\/\u627e\u5b8c\u4e86\u6ca1\u627e\u5230\u54c8\u5e0c\u6876<\/span><br \/>\n_node <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">nullptr<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">return<\/span> <span class=\"token operator\">*<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>1.\u8fd4\u56de\u5bf9\u5f53\u524d\u8fed\u4ee3\u5668\u5bf9\u8c61\u7684\u5f15\u7528&#xff08;self&amp;&#xff09;&#xff0c;\u4ee5\u4fbf\u652f\u6301\u8fde\u7eed\u7684\u81ea\u589e\u64cd\u4f5c 2.\u5206\u5f53\u524d\u6876\u4e2d\u7ee7\u7eed\u5f80\u4e0b\u904d\u5386\u548c\u67e5\u627e\u4e0b\u4e00\u4e2a\u54c8\u5e0c\u6876\u4e2d\u4e24\u79cd\u60c5\u51b5 3.\u67e5\u627e\u4e0b\u4e00\u4e2a\u54c8\u5e0c\u6876\u65f6\u5148\u7528\u83b7\u53d6\u952ekot\u51fd\u6570\u62ff\u5230\u952e\u503c\u7136\u540e\u7528\u54c8\u5e0c\u51fd\u6570hf\u8ba1\u7b97\u8be5\u952e\u7684\u6620\u5c04\u54c8\u5e0c\u503c\u3002\u4ece\u4e0b\u4e00\u4e2a\u54c8\u5e0c\u6876\u7684\u4f4d\u7f6e\u5f00\u59cb\u627e\u4e0d\u4e3a\u7a7a\u7684\u54c8\u5e0c\u6876&#xff0c;\u5faa\u73af\u6761\u4ef6\u4e3a\u54c8\u5e0c\u503c\u7d22\u5f15\u5c0f\u4e8e\u5f53\u524d\u5df2\u5b58\u50a8\u6876\u7684\u5927\u5c0f&#xff0c;\u82e5\u627e\u5230\u4e0d\u4e3a\u7a7a\u54c8\u5e0c\u6876\u8fd4\u56dethis\u6307\u9488&#xff0c;\u6ca1\u627e\u5230\u5bf9\u5f53\u524d_node\u7f6e\u7a7a\u518d\u8fd4\u56dethis\u6307\u9488<\/p>\n<h5>\u524d\u7f6e\u58f0\u660e<\/h5>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/05\/20250530042709-6839339d1330b.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> \u7531\u4e8e\u4e0a\u56fe\u4e2d\u5b58\u5728\u76f8\u4e92\u5305\u542b\u95ee\u9898&#xff0c;\u9700\u8981\u524d\u7f6e\u58f0\u660e\u3002 \u6ce8\u610f&#xff1a;\u7f16\u8bd1\u5668\u9700\u8981\u5b8c\u6574\u7684\u7c7b\u578b\u5b9a\u4e49\u6765\u786e\u5b9a\u5185\u5b58\u5e03\u5c40\u3001\u8c03\u7528\u6210\u5458\u51fd\u6570\u548c\u751f\u6210\u6b63\u786e\u7684\u673a\u5668\u7801\u3002\u524d\u5411\u58f0\u660e\u53ea\u80fd\u7528\u4e8e\u6307\u9488\u548c\u5f15\u7528\u7c7b\u578b&#xff0c;\u56e0\u4e3a\u8fd9\u4e9b\u7c7b\u578b\u4e0d\u9700\u8981\u5b8c\u6574\u7684\u7c7b\u578b\u4fe1\u606f\u3002\u5728\u9700\u8981\u76f4\u63a5\u5b9e\u4f8b\u5316\u5bf9\u8c61\u6216\u8c03\u7528\u6210\u5458\u51fd\u6570\u65f6&#xff0c;\u5fc5\u987b\u5305\u542b\u5b8c\u6574\u7684\u7c7b\u578b\u5b9a\u4e49\u3002 \u6240\u4ee5\u9009\u62e9\u524d\u5411\u58f0\u660e\u54c8\u5e0c\u8868\u6307\u9488<\/p>\n<ul>\n<li>\u5b8c\u6574\u4ee3\u7801<\/li>\n<\/ul>\n<p><span class=\"token comment\">\/\/\u524d\u7f6e\u58f0\u660e<\/span><br \/>\n<span class=\"token keyword\">template<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">K<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">T<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">KeyOfT<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">HashFunc<\/span><span class=\"token operator\">&gt;<\/span><br \/>\n<span class=\"token keyword\">class<\/span> <span class=\"token class-name\">HashTable<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">template<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">K<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">T<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Ptr<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Ref<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">KeyOfT<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">HashFunc<\/span><span class=\"token operator\">&gt;<\/span><br \/>\n<span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">HTIterator<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">typedef<\/span> HashNode<span class=\"token operator\">&lt;<\/span>T<span class=\"token operator\">&gt;<\/span> Node<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">typedef<\/span> HTIterator<span class=\"token operator\">&lt;<\/span>K<span class=\"token punctuation\">,<\/span> T<span class=\"token punctuation\">,<\/span>Ptr<span class=\"token punctuation\">,<\/span>Ref<span class=\"token punctuation\">,<\/span> KeyOfT<span class=\"token punctuation\">,<\/span> HashFunc<span class=\"token operator\">&gt;<\/span> self<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">typedef<\/span> HTIterator<span class=\"token operator\">&lt;<\/span>K<span class=\"token punctuation\">,<\/span> T<span class=\"token punctuation\">,<\/span> T<span class=\"token operator\">*<\/span><span class=\"token punctuation\">,<\/span> T<span class=\"token operator\">&amp;<\/span><span class=\"token punctuation\">,<\/span> KeyOfT<span class=\"token punctuation\">,<\/span> HashFunc<span class=\"token operator\">&gt;<\/span> iterator<span class=\"token punctuation\">;<\/span><\/p>\n<p>Node<span class=\"token operator\">*<\/span> _node<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">const<\/span> HashTable<span class=\"token operator\">&lt;<\/span>K<span class=\"token punctuation\">,<\/span> T<span class=\"token punctuation\">,<\/span> KeyOfT<span class=\"token punctuation\">,<\/span> HashFunc<span class=\"token operator\">&gt;<\/span><span class=\"token operator\">*<\/span> _pht<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token function\">HTIterator<\/span><span class=\"token punctuation\">(<\/span>Node<span class=\"token operator\">*<\/span> node<span class=\"token punctuation\">,<\/span><span class=\"token keyword\">const<\/span> HashTable<span class=\"token operator\">&lt;<\/span>K<span class=\"token punctuation\">,<\/span> T<span class=\"token punctuation\">,<\/span> KeyOfT<span class=\"token punctuation\">,<\/span> HashFunc<span class=\"token operator\">&gt;<\/span><span class=\"token operator\">*<\/span> pht<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token operator\">:<\/span><span class=\"token function\">_node<\/span><span class=\"token punctuation\">(<\/span>node<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">,<\/span> <span class=\"token function\">_pht<\/span><span class=\"token punctuation\">(<\/span>pht<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span> <span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u666e\u901a\u8fed\u4ee3\u5668\u65f6&#xff0c;\u4ed6\u662f\u62f7\u8d1d\u6784\u9020<\/span><br \/>\n<span class=\"token comment\">\/\/ const\u8fed\u4ee3\u5668\u65f6&#xff0c;\u4ed6\u662f\u6784\u9020<\/span><br \/>\n<span class=\"token function\">HTIterator<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> iterator<span class=\"token operator\">&amp;<\/span> it<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token operator\">:<\/span><span class=\"token function\">_node<\/span><span class=\"token punctuation\">(<\/span>it<span class=\"token punctuation\">.<\/span>_node<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">,<\/span> <span class=\"token function\">_pht<\/span><span class=\"token punctuation\">(<\/span>it<span class=\"token punctuation\">.<\/span>_pht<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span> <span class=\"token punctuation\">}<\/span><\/p>\n<p>Ref <span class=\"token keyword\">operator<\/span><span class=\"token operator\">*<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">return<\/span> _node<span class=\"token operator\">-&gt;<\/span>_data<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>Ptr <span class=\"token keyword\">operator<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">return<\/span> <span class=\"token operator\">&amp;<\/span>_node<span class=\"token operator\">-&gt;<\/span>_data<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>self<span class=\"token operator\">&amp;<\/span> <span class=\"token keyword\">operator<\/span><span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>_node<span class=\"token operator\">-&gt;<\/span>_next<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token comment\">\/\/\u5f53\u524d\u6876\u8fd8\u6ca1\u5b8c&#xff0c;\u7ee7\u7eed\u5f80\u4e0b\u904d\u5386<\/span><br \/>\n_node <span class=\"token operator\">&#061;<\/span> _node<span class=\"token operator\">-&gt;<\/span>_next<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">else<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\nKeyOfT kot<span class=\"token punctuation\">;<\/span><br \/>\nHashFunc hf<span class=\"token punctuation\">;<\/span><br \/>\nsize_t hashi <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">hf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token function\">kot<\/span><span class=\"token punctuation\">(<\/span>_node<span class=\"token operator\">-&gt;<\/span>_data<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">%<\/span> _pht<span class=\"token operator\">-&gt;<\/span>_table<span class=\"token punctuation\">.<\/span><span class=\"token function\">size<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/\/\u4ece\u4e0b\u4e00\u4e2a\u4f4d\u7f6e\u5bfb\u627e<\/span><br \/>\nhashi<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span>hashi <span class=\"token operator\">&lt;<\/span> _pht<span class=\"token operator\">-&gt;<\/span>_table<span class=\"token punctuation\">.<\/span><span class=\"token function\">size<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>_pht<span class=\"token operator\">-&gt;<\/span>_table<span class=\"token punctuation\">[<\/span>hashi<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n_node <span class=\"token operator\">&#061;<\/span> _pht<span class=\"token operator\">-&gt;<\/span>_table<span class=\"token punctuation\">[<\/span>hashi<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">return<\/span> <span class=\"token operator\">*<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">else<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\nhashi<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token comment\">\/\/\u627e\u5b8c\u4e86\u6ca1\u627e\u5230\u54c8\u5e0c\u6876<\/span><br \/>\n_node <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">nullptr<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">return<\/span> <span class=\"token operator\">*<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">bool<\/span> <span class=\"token keyword\">operator<\/span><span class=\"token operator\">!&#061;<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> self<span class=\"token operator\">&amp;<\/span> s<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">return<\/span> _node <span class=\"token operator\">!&#061;<\/span> s<span class=\"token punctuation\">.<\/span>_node<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">bool<\/span> <span class=\"token keyword\">operator<\/span><span class=\"token operator\">&#061;&#061;<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> self<span class=\"token operator\">&amp;<\/span> s<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">return<\/span> _node <span class=\"token operator\">&#061;&#061;<\/span> s<span class=\"token punctuation\">.<\/span>_node<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<h4>1.3\u54c8\u5e0c\u8868\u57fa\u672c\u6a21\u677f<\/h4>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/05\/20250530042709-6839339d41c25.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> \u6a21\u677f\u53c2\u6570\u4e0e\u6a21\u677f\u91cd\u5b9a\u4e49\u548c\u8fed\u4ee3\u5668\u7684\u76f8\u540c&#xff0c;\u6ce8\u610f\u8981\u52a0\u4e0a\u8fed\u4ee3\u5668\u7684\u53cb\u5143\u58f0\u660e&#xff0c;\u5728\u8fed\u4ee3\u5668\u4e2d\u4f1a\u8bbf\u95ee\u54c8\u5e0c\u8868\u4e2d\u7684\u79c1\u6709\u53d8\u91cf<\/p>\n<h5>\u83b7\u53d6\u8fed\u4ee3\u5668<\/h5>\n<p>iterator <span class=\"token function\">begin<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token comment\">\/\/\u627e\u7b2c\u4e00\u4e2a\u6876<\/span><br \/>\n<span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span>size_t i <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> i <span class=\"token operator\">&lt;<\/span> _table<span class=\"token punctuation\">.<\/span><span class=\"token function\">size<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\nNode<span class=\"token operator\">*<\/span> cur <span class=\"token operator\">&#061;<\/span> _table<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>cur<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">return<\/span> <span class=\"token function\">iterator<\/span><span class=\"token punctuation\">(<\/span>cur<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">return<\/span> <span class=\"token function\">iterator<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">nullptr<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>iterator <span class=\"token function\">end<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">return<\/span> <span class=\"token function\">iterator<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">nullptr<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>const_iterator <span class=\"token function\">begin<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token keyword\">const<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token comment\">\/\/\u627e\u7b2c\u4e00\u4e2a\u6876<\/span><br \/>\n<span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span>size_t i <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> i <span class=\"token operator\">&lt;<\/span> _table<span class=\"token punctuation\">.<\/span><span class=\"token function\">size<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\nNode<span class=\"token operator\">*<\/span> cur <span class=\"token operator\">&#061;<\/span> _table<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>cur<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">return<\/span> <span class=\"token function\">const_iterator<\/span><span class=\"token punctuation\">(<\/span>cur<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">return<\/span> <span class=\"token function\">const_iterator<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">nullptr<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>const_iterator <span class=\"token function\">end<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token keyword\">const<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">return<\/span> <span class=\"token function\">const_iterator<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">nullptr<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u6ce8\u610f\u8fed\u4ee3\u5668\u662f\u7531\u5f53\u524d\u8282\u70b9\u548c\u54c8\u5e0c\u8868\u6307\u9488\u6784\u6210&#xff0c;\u672b\u5c3e\u8fed\u4ee3\u5668\u8fd4\u56de\u7a7a\u6307\u9488\u548cthis\u6307\u9488\u3002<\/p>\n<h5>\u6784\u9020\u4e0e\u6790\u6784\u51fd\u6570<\/h5>\n<p><span class=\"token function\">HashTable<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n_table<span class=\"token punctuation\">.<\/span><span class=\"token function\">resize<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">10<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">nullptr<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token operator\">~<\/span><span class=\"token function\">HashTable<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span>size_t i <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> i <span class=\"token operator\">&lt;<\/span> _table<span class=\"token punctuation\">.<\/span><span class=\"token function\">size<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\nNode<span class=\"token operator\">*<\/span> cur <span class=\"token operator\">&#061;<\/span> _table<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span>cur<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\nNode<span class=\"token operator\">*<\/span> next <span class=\"token operator\">&#061;<\/span> cur<span class=\"token operator\">-&gt;<\/span>_next<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">delete<\/span> cur<span class=\"token punctuation\">;<\/span><br \/>\ncur <span class=\"token operator\">&#061;<\/span> next<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n_table<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">nullptr<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>resize\u5f00\u8f9f\u548c\u521d\u59cb\u5316\u7a7a\u95f4\u4e3a\u7a7a&#xff0c;\u7531\u4e8evector\u6570\u7ec4\u4e2d\u6bcf\u4e2a\u4f4d\u7f6e\u90fd\u5b58\u50a8\u7740\u94fe\u8868\u5934\u6307\u9488&#xff0c;\u81ea\u5b9a\u4e49\u7c7b\u578b\u9700\u8981\u624b\u52a8\u91ca\u653e\u7a7a\u95f4<\/p>\n<h5>\u63d2\u5165<\/h5>\n<p>pair<span class=\"token operator\">&lt;<\/span>iterator<span class=\"token punctuation\">,<\/span><span class=\"token keyword\">bool<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token function\">Insert<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> T<span class=\"token operator\">&amp;<\/span>data<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\nKeyOfT kot<span class=\"token punctuation\">;<\/span><br \/>\niterator it<span class=\"token operator\">&#061;<\/span><span class=\"token function\">Find<\/span><span class=\"token punctuation\">(<\/span><span class=\"token function\">kot<\/span><span class=\"token punctuation\">(<\/span>data<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">if<\/span><span class=\"token punctuation\">(<\/span>it<span class=\"token operator\">!&#061;<\/span><span class=\"token function\">end<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">return<\/span> <span class=\"token function\">make_pair<\/span><span class=\"token punctuation\">(<\/span>it<span class=\"token punctuation\">,<\/span><span class=\"token boolean\">false<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\nHashFunc hf<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/\/\u68c0\u67e5\u6269\u5bb9&#xff0c;\u8f7d\u8377\u56e0\u5b50\u52301\u5c31\u6269\u5bb9<\/span><br \/>\n<span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>_n <span class=\"token operator\">&#061;&#061;<\/span> _table<span class=\"token punctuation\">.<\/span><span class=\"token function\">size<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\nsize_t newsize <span class=\"token operator\">&#061;<\/span> _table<span class=\"token punctuation\">.<\/span><span class=\"token function\">size<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">*<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">;<\/span><br \/>\nvector<span class=\"token operator\">&lt;<\/span>Node<span class=\"token operator\">*<\/span><span class=\"token operator\">&gt;<\/span> newtable<span class=\"token punctuation\">;<\/span><br \/>\nnewtable<span class=\"token punctuation\">.<\/span><span class=\"token function\">resize<\/span><span class=\"token punctuation\">(<\/span>newsize<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">nullptr<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/\/\u904d\u5386\u65e7\u8868&#xff0c;\u5c06\u8282\u70b9\u8f6c\u79fb\u6302\u5230\u65b0\u8868<\/span><br \/>\n<span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span>size_t i <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> i <span class=\"token operator\">&lt;<\/span> _table<span class=\"token punctuation\">.<\/span><span class=\"token function\">size<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\nNode<span class=\"token operator\">*<\/span> cur <span class=\"token operator\">&#061;<\/span> _table<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/\/\u5728\u6570\u7ec4\u4e2d\u5411\u4e0b\u904d\u5386\u5904\u7406\u6bcf\u4e00\u4e2a\u54c8\u5e0c\u6876<\/span><br \/>\n<span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span>cur<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\nsize_t hashi <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">hf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token function\">kot<\/span><span class=\"token punctuation\">(<\/span>data<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">%<\/span> newsize<span class=\"token punctuation\">;<\/span><br \/>\nNode<span class=\"token operator\">*<\/span> next <span class=\"token operator\">&#061;<\/span> cur<span class=\"token operator\">-&gt;<\/span>_next<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/\/\u5934\u63d2<\/span><br \/>\ncur<span class=\"token operator\">-&gt;<\/span>_next <span class=\"token operator\">&#061;<\/span> newtable<span class=\"token punctuation\">[<\/span>hashi<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\nnewtable<span class=\"token punctuation\">[<\/span>hashi<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> cur<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/\/\u66f4\u65b0\u8282\u70b9<\/span><br \/>\ncur <span class=\"token operator\">&#061;<\/span> next<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n_table<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">nullptr<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token comment\">\/\/\u4ea4\u6362\u65b0\u65e7\u8868<\/span><br \/>\n_table<span class=\"token punctuation\">.<\/span><span class=\"token function\">swap<\/span><span class=\"token punctuation\">(<\/span>newtable<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/\u63d2\u5165\u65b0\u8282\u70b9<\/span><br \/>\nsize_t hashi <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">hf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token function\">kot<\/span><span class=\"token punctuation\">(<\/span>data<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">%<\/span> _table<span class=\"token punctuation\">.<\/span><span class=\"token function\">size<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\nNode<span class=\"token operator\">*<\/span> newnode <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token function\">Node<\/span><span class=\"token punctuation\">(<\/span>data<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\nnewnode<span class=\"token operator\">-&gt;<\/span>_next <span class=\"token operator\">&#061;<\/span> _table<span class=\"token punctuation\">[<\/span>hashi<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n_table<span class=\"token punctuation\">[<\/span>hashi<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> newnode<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token operator\">&#043;&#043;<\/span>_n<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">return<\/span> <span class=\"token function\">make_pair<\/span><span class=\"token punctuation\">(<\/span><span class=\"token function\">iterator<\/span><span class=\"token punctuation\">(<\/span>newnode<span class=\"token punctuation\">,<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><span class=\"token boolean\">true<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>1.\u521b\u5efa\u4e00\u4e2a\u63d0\u53d6\u952e\u5bf9\u8c61&#xff0c;\u53ef\u4ee5\u50cf\u51fd\u6570\u4e00\u6837\u8c03\u7528 2.\u68c0\u67e5\u5f85\u63d2\u5165\u5143\u7d20\u662f\u5426\u5df2\u5b58\u5728 3.\u5b9a\u4e49\u4e00\u4e2a\u54c8\u5e0c\u51fd\u6570\u5bf9\u8c61&#xff0c;\u91cd\u8f7d\u4e86()\u4e5f\u53ef\u4ee5\u50cf\u51fd\u6570\u4e00\u6837\u88ab\u8c03\u7528 4.\u68c0\u67e5\u6269\u5bb9&#xff0c;\u4e0e\u539f\u54c8\u5e0c\u8868\u903b\u8f91\u76f8\u540c 5.\u91cd\u65b0\u8ba1\u7b97\u54c8\u5e0c\u503c\u518d\u521b\u5efa\u65b0\u8282\u70b9\u5e76\u63d2\u5165&#xff0c;\u66f4\u65b0\u6709\u6548\u503c\u5143\u7d20&#xff0c;\u8fd4\u56de\u4e00\u4e2a\u7531\u8fed\u4ee3\u5668\u548cbool\u503c\u6784\u6210\u7684\u952e\u503c\u5bf9<\/p>\n<p>\u7531\u4e8eunordered_map\u7684[]\u91cd\u8f7d\u9700\u8981\u901a\u8fc7insert\u5b9e\u73b0&#xff0c;\u9700\u8981\u63d0\u4f9b\u5bf9\u6307\u5b9a\u952e\u7684\u503c\u7684\u8bbf\u95ee&#xff0c;\u5982\u679c\u952e\u4e0d\u5b58\u5728&#xff0c;\u5219\u9700\u8981\u63d2\u5165\u4e00\u4e2a\u9ed8\u8ba4\u6784\u9020\u7684\u503c\u3002\u6240\u4ee5insert\u7684\u8fd4\u56de\u503c\u8981\u53d8\u6210\u952e\u503c\u5bf9<\/p>\n<h5>\u67e5\u627e<\/h5>\n<p>iterator <span class=\"token function\">Find<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> K<span class=\"token operator\">&amp;<\/span> key<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\nKeyOfT kot<span class=\"token punctuation\">;<\/span><br \/>\nHashFunc hf<span class=\"token punctuation\">;<\/span><br \/>\nsize_t hashi <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">hf<\/span><span class=\"token punctuation\">(<\/span>key<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">%<\/span> _table<span class=\"token punctuation\">.<\/span><span class=\"token function\">size<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/\/\u5728\u8be5\u54c8\u5e0c\u6876\u4e2d\u904d\u5386\u5bfb\u627e<\/span><br \/>\nNode<span class=\"token operator\">*<\/span> cur <span class=\"token operator\">&#061;<\/span> _table<span class=\"token punctuation\">[<\/span>hashi<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span>cur<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token function\">kot<\/span><span class=\"token punctuation\">(<\/span>cur<span class=\"token operator\">-&gt;<\/span>_data<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;&#061;<\/span> key<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">return<\/span> <span class=\"token function\">iterator<\/span><span class=\"token punctuation\">(<\/span>cur<span class=\"token punctuation\">,<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\ncur <span class=\"token operator\">&#061;<\/span> cur<span class=\"token operator\">-&gt;<\/span>_next<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">return<\/span> <span class=\"token function\">end<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u4e0e\u539f\u54c8\u5e0c\u8868\u533a\u522b\u5728\u4e8e\u8fd4\u56de\u503c\u53d8\u6210\u8fed\u4ee3\u5668<\/p>\n<h5>\u5220\u9664<\/h5>\n<p><span class=\"token keyword\">bool<\/span> <span class=\"token function\">Erase<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> K<span class=\"token operator\">&amp;<\/span> key<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\nHashFunc hf<span class=\"token punctuation\">;<\/span><br \/>\nsize_t hashi <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">hf<\/span><span class=\"token punctuation\">(<\/span>key<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">%<\/span> _table<span class=\"token punctuation\">.<\/span><span class=\"token function\">size<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\nNode<span class=\"token operator\">*<\/span> cur <span class=\"token operator\">&#061;<\/span> _table<span class=\"token punctuation\">[<\/span>hashi<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\nNode<span class=\"token operator\">*<\/span> prev <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">nullptr<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span>cur<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token function\">kot<\/span><span class=\"token punctuation\">(<\/span>cur<span class=\"token operator\">-&gt;<\/span>_data<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;&#061;<\/span> key<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token comment\">\/\/\u5224\u65ad\u8981\u5220\u9664\u8282\u70b9\u4e3a\u5934\u8282\u70b9\u60c5\u51b5<\/span><br \/>\n<span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>prev <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token keyword\">nullptr<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n_table<span class=\"token punctuation\">[<\/span>hashi<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> cur<span class=\"token operator\">-&gt;<\/span>_next<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">else<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\nprev<span class=\"token operator\">-&gt;<\/span>_next <span class=\"token operator\">&#061;<\/span> cur<span class=\"token operator\">-&gt;<\/span>_next<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token operator\">&#8212;<\/span>_n<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">delete<\/span> cur<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">return<\/span> <span class=\"token boolean\">true<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token comment\">\/\/\u66f4\u65b0\u8282\u70b9\u7ee7\u7eed\u904d\u5386<\/span><br \/>\nprev <span class=\"token operator\">&#061;<\/span> cur<span class=\"token punctuation\">;<\/span><br \/>\ncur <span class=\"token operator\">&#061;<\/span> cur<span class=\"token operator\">-&gt;<\/span>_next<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">return<\/span> <span class=\"token boolean\">false<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u4e0e\u539f\u54c8\u5e0c\u8868\u76f8\u540c<\/p>\n<h5>\u54c8\u5e0c\u51fd\u6570<\/h5>\n<p><span class=\"token keyword\">template<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">K<\/span><span class=\"token operator\">&gt;<\/span><br \/>\n<span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">DefaultHashFunc<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\nsize_t <span class=\"token keyword\">operator<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> K<span class=\"token operator\">&amp;<\/span> key<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token comment\">\/\/\u5f3a\u8f6c\u6210\u8fd4\u56de\u503c\u7c7b\u578b<\/span><br \/>\n<span class=\"token keyword\">return<\/span> <span class=\"token punctuation\">(<\/span>size_t<span class=\"token punctuation\">)<\/span>key<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/\/\u6a21\u677f\u7279\u5316<\/span><br \/>\n<span class=\"token keyword\">template<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token operator\">&gt;<\/span><br \/>\n<span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">DefaultHashFunc<\/span><span class=\"token operator\">&lt;<\/span>string<span class=\"token operator\">&gt;<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\nsize_t <span class=\"token keyword\">operator<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> string<span class=\"token operator\">&amp;<\/span> str<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token comment\">\/\/ BKDR,string\u7684\u54c8\u5e0c\u7b97\u6cd5<\/span><br \/>\nsize_t hash <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">auto<\/span> ch <span class=\"token operator\">:<\/span> str<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\nhash <span class=\"token operator\">*&#061;<\/span> <span class=\"token number\">131<\/span><span class=\"token punctuation\">;<\/span><br \/>\nhash <span class=\"token operator\">&#043;&#061;<\/span> ch<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">return<\/span> hash<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>\u4e0e\u539f\u54c8\u5e0c\u8868\u76f8\u540c<\/p>\n<ul>\n<li>\u4ee3\u7801<\/li>\n<\/ul>\n<p><span class=\"token keyword\">template<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">K<\/span><span class=\"token operator\">&gt;<\/span><br \/>\n<span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">DefaultHashFunc<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\nsize_t <span class=\"token keyword\">operator<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> K<span class=\"token operator\">&amp;<\/span> key<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token comment\">\/\/\u5f3a\u8f6c\u6210\u8fd4\u56de\u503c\u7c7b\u578b<\/span><br \/>\n<span class=\"token keyword\">return<\/span> <span class=\"token punctuation\">(<\/span>size_t<span class=\"token punctuation\">)<\/span>key<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/\/\u6a21\u677f\u7279\u5316<\/span><br \/>\n<span class=\"token keyword\">template<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token operator\">&gt;<\/span><br \/>\n<span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">DefaultHashFunc<\/span><span class=\"token operator\">&lt;<\/span>string<span class=\"token operator\">&gt;<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\nsize_t <span class=\"token keyword\">operator<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> string<span class=\"token operator\">&amp;<\/span> str<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token comment\">\/\/ BKDR,string\u7684\u54c8\u5e0c\u7b97\u6cd5<\/span><br \/>\nsize_t hash <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">auto<\/span> ch <span class=\"token operator\">:<\/span> str<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\nhash <span class=\"token operator\">*&#061;<\/span> <span class=\"token number\">131<\/span><span class=\"token punctuation\">;<\/span><br \/>\nhash <span class=\"token operator\">&#043;&#061;<\/span> ch<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">return<\/span> hash<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">namespace<\/span> hash_bucket<br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">template<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">T<\/span><span class=\"token operator\">&gt;<\/span><br \/>\n<span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">HashNode<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\nT _data<span class=\"token punctuation\">;<\/span><br \/>\nHashNode<span class=\"token operator\">&lt;<\/span>T<span class=\"token operator\">&gt;<\/span><span class=\"token operator\">*<\/span> _next<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token function\">HashNode<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> T<span class=\"token operator\">&amp;<\/span>data<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token operator\">:<\/span><span class=\"token function\">_data<\/span><span class=\"token punctuation\">(<\/span>data<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">,<\/span> <span class=\"token function\">_next<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">nullptr<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/\u524d\u7f6e\u58f0\u660e<\/span><br \/>\n<span class=\"token keyword\">template<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">K<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">T<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">KeyOfT<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">HashFunc<\/span><span class=\"token operator\">&gt;<\/span><br \/>\n<span class=\"token keyword\">class<\/span> <span class=\"token class-name\">HashTable<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">template<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">K<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">T<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Ptr<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Ref<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">KeyOfT<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">HashFunc<\/span><span class=\"token operator\">&gt;<\/span><br \/>\n<span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">HTIterator<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">typedef<\/span> HashNode<span class=\"token operator\">&lt;<\/span>T<span class=\"token operator\">&gt;<\/span> Node<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">typedef<\/span> HTIterator<span class=\"token operator\">&lt;<\/span>K<span class=\"token punctuation\">,<\/span> T<span class=\"token punctuation\">,<\/span>Ptr<span class=\"token punctuation\">,<\/span>Ref<span class=\"token punctuation\">,<\/span> KeyOfT<span class=\"token punctuation\">,<\/span> HashFunc<span class=\"token operator\">&gt;<\/span> self<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">typedef<\/span> HTIterator<span class=\"token operator\">&lt;<\/span>K<span class=\"token punctuation\">,<\/span> T<span class=\"token punctuation\">,<\/span> T<span class=\"token operator\">*<\/span><span class=\"token punctuation\">,<\/span> T<span class=\"token operator\">&amp;<\/span><span class=\"token punctuation\">,<\/span> KeyOfT<span class=\"token punctuation\">,<\/span> HashFunc<span class=\"token operator\">&gt;<\/span> iterator<span class=\"token punctuation\">;<\/span><\/p>\n<p>Node<span class=\"token operator\">*<\/span> _node<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">const<\/span> HashTable<span class=\"token operator\">&lt;<\/span>K<span class=\"token punctuation\">,<\/span> T<span class=\"token punctuation\">,<\/span> KeyOfT<span class=\"token punctuation\">,<\/span> HashFunc<span class=\"token operator\">&gt;<\/span><span class=\"token operator\">*<\/span> _pht<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token function\">HTIterator<\/span><span class=\"token punctuation\">(<\/span>Node<span class=\"token operator\">*<\/span> node<span class=\"token punctuation\">,<\/span><span class=\"token keyword\">const<\/span> HashTable<span class=\"token operator\">&lt;<\/span>K<span class=\"token punctuation\">,<\/span> T<span class=\"token punctuation\">,<\/span> KeyOfT<span class=\"token punctuation\">,<\/span> HashFunc<span class=\"token operator\">&gt;<\/span><span class=\"token operator\">*<\/span> pht<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token operator\">:<\/span><span class=\"token function\">_node<\/span><span class=\"token punctuation\">(<\/span>node<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">,<\/span> <span class=\"token function\">_pht<\/span><span class=\"token punctuation\">(<\/span>pht<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span> <span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u666e\u901a\u8fed\u4ee3\u5668\u65f6&#xff0c;\u4ed6\u662f\u62f7\u8d1d\u6784\u9020<\/span><br \/>\n<span class=\"token comment\">\/\/ const\u8fed\u4ee3\u5668\u65f6&#xff0c;\u4ed6\u662f\u6784\u9020<\/span><br \/>\n<span class=\"token function\">HTIterator<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> iterator<span class=\"token operator\">&amp;<\/span> it<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token operator\">:<\/span><span class=\"token function\">_node<\/span><span class=\"token punctuation\">(<\/span>it<span class=\"token punctuation\">.<\/span>_node<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">,<\/span> <span class=\"token function\">_pht<\/span><span class=\"token punctuation\">(<\/span>it<span class=\"token punctuation\">.<\/span>_pht<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span> <span class=\"token punctuation\">}<\/span><\/p>\n<p>Ref <span class=\"token keyword\">operator<\/span><span class=\"token operator\">*<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">return<\/span> _node<span class=\"token operator\">-&gt;<\/span>_data<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>Ptr <span class=\"token keyword\">operator<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">return<\/span> <span class=\"token operator\">&amp;<\/span>_node<span class=\"token operator\">-&gt;<\/span>_data<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>self<span class=\"token operator\">&amp;<\/span> <span class=\"token keyword\">operator<\/span><span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>_node<span class=\"token operator\">-&gt;<\/span>_next<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token comment\">\/\/\u5f53\u524d\u6876\u8fd8\u6ca1\u5b8c&#xff0c;\u7ee7\u7eed\u5f80\u4e0b\u904d\u5386<\/span><br \/>\n_node <span class=\"token operator\">&#061;<\/span> _node<span class=\"token operator\">-&gt;<\/span>_next<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">else<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\nKeyOfT kot<span class=\"token punctuation\">;<\/span><br \/>\nHashFunc hf<span class=\"token punctuation\">;<\/span><br \/>\nsize_t hashi <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">hf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token function\">kot<\/span><span class=\"token punctuation\">(<\/span>_node<span class=\"token operator\">-&gt;<\/span>_data<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">%<\/span> _pht<span class=\"token operator\">-&gt;<\/span>_table<span class=\"token punctuation\">.<\/span><span class=\"token function\">size<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/\/\u4ece\u4e0b\u4e00\u4e2a\u4f4d\u7f6e\u5bfb\u627e<\/span><br \/>\nhashi<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span>hashi <span class=\"token operator\">&lt;<\/span> _pht<span class=\"token operator\">-&gt;<\/span>_table<span class=\"token punctuation\">.<\/span><span class=\"token function\">size<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>_pht<span class=\"token operator\">-&gt;<\/span>_table<span class=\"token punctuation\">[<\/span>hashi<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n_node <span class=\"token operator\">&#061;<\/span> _pht<span class=\"token operator\">-&gt;<\/span>_table<span class=\"token punctuation\">[<\/span>hashi<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">return<\/span> <span class=\"token operator\">*<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">else<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\nhashi<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token comment\">\/\/\u627e\u5b8c\u4e86\u6ca1\u627e\u5230\u54c8\u5e0c\u6876<\/span><br \/>\n_node <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">nullptr<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">return<\/span> <span class=\"token operator\">*<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">bool<\/span> <span class=\"token keyword\">operator<\/span><span class=\"token operator\">!&#061;<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> self<span class=\"token operator\">&amp;<\/span> s<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">return<\/span> _node <span class=\"token operator\">!&#061;<\/span> s<span class=\"token punctuation\">.<\/span>_node<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">bool<\/span> <span class=\"token keyword\">operator<\/span><span class=\"token operator\">&#061;&#061;<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> self<span class=\"token operator\">&amp;<\/span> s<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">return<\/span> _node <span class=\"token operator\">&#061;&#061;<\/span> s<span class=\"token punctuation\">.<\/span>_node<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ set -&gt; hash_bucket::HashTable&lt;K, K&gt; _ht;<\/span><br \/>\n<span class=\"token comment\">\/\/ map -&gt; hash_bucket::HashTable&lt;K, pair&lt;K, V&gt;&gt; _ht;<\/span><br \/>\n<span class=\"token keyword\">template<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">K<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">T<\/span><span class=\"token punctuation\">,<\/span><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">KeyOfT<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">HashFunc<\/span> <span class=\"token operator\">&#061;<\/span> DefaultHashFunc<span class=\"token operator\">&lt;<\/span>K<span class=\"token operator\">&gt;&gt;<\/span><br \/>\n<span class=\"token keyword\">class<\/span> <span class=\"token class-name\">HashTable<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">typedef<\/span> HashNode<span class=\"token operator\">&lt;<\/span>T<span class=\"token operator\">&gt;<\/span> Node<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/\u53cb\u5143\u58f0\u660e<\/span><br \/>\n<span class=\"token keyword\">template<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">K<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">T<\/span><span class=\"token punctuation\">,<\/span><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Ptr<\/span><span class=\"token punctuation\">,<\/span><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Ref<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">KeyOfT<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">HashFunc<\/span><span class=\"token operator\">&gt;<\/span><br \/>\n<span class=\"token keyword\">friend<\/span> <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">HTIterator<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">public<\/span><span class=\"token operator\">:<\/span><br \/>\n<span class=\"token keyword\">typedef<\/span> HTIterator<span class=\"token operator\">&lt;<\/span>K<span class=\"token punctuation\">,<\/span> T<span class=\"token punctuation\">,<\/span>T<span class=\"token operator\">*<\/span><span class=\"token punctuation\">,<\/span>T<span class=\"token operator\">&amp;<\/span><span class=\"token punctuation\">,<\/span> KeyOfT<span class=\"token punctuation\">,<\/span> HashFunc<span class=\"token operator\">&gt;<\/span> iterator<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">typedef<\/span> HTIterator<span class=\"token operator\">&lt;<\/span>K<span class=\"token punctuation\">,<\/span> T<span class=\"token punctuation\">,<\/span><span class=\"token keyword\">const<\/span> T<span class=\"token operator\">*<\/span><span class=\"token punctuation\">,<\/span><span class=\"token keyword\">const<\/span> T<span class=\"token operator\">&amp;<\/span><span class=\"token punctuation\">,<\/span> KeyOfT<span class=\"token punctuation\">,<\/span> HashFunc<span class=\"token operator\">&gt;<\/span> const_iterator<span class=\"token punctuation\">;<\/span><\/p>\n<p>iterator <span class=\"token function\">begin<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token comment\">\/\/\u627e\u7b2c\u4e00\u4e2a\u6876<\/span><br \/>\n<span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span>size_t i <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> i <span class=\"token operator\">&lt;<\/span> _table<span class=\"token punctuation\">.<\/span><span class=\"token function\">size<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\nNode<span class=\"token operator\">*<\/span> cur <span class=\"token operator\">&#061;<\/span> _table<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>cur<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">return<\/span> <span class=\"token function\">iterator<\/span><span class=\"token punctuation\">(<\/span>cur<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">return<\/span> <span class=\"token function\">iterator<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">nullptr<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>iterator <span class=\"token function\">end<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">return<\/span> <span class=\"token function\">iterator<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">nullptr<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>const_iterator <span class=\"token function\">begin<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token keyword\">const<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token comment\">\/\/\u627e\u7b2c\u4e00\u4e2a\u6876<\/span><br \/>\n<span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span>size_t i <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> i <span class=\"token operator\">&lt;<\/span> _table<span class=\"token punctuation\">.<\/span><span class=\"token function\">size<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\nNode<span class=\"token operator\">*<\/span> cur <span class=\"token operator\">&#061;<\/span> _table<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>cur<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">return<\/span> <span class=\"token function\">const_iterator<\/span><span class=\"token punctuation\">(<\/span>cur<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">return<\/span> <span class=\"token function\">const_iterator<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">nullptr<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>const_iterator <span class=\"token function\">end<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token keyword\">const<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">return<\/span> <span class=\"token function\">const_iterator<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">nullptr<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token function\">HashTable<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n_table<span class=\"token punctuation\">.<\/span><span class=\"token function\">resize<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">10<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">nullptr<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token operator\">~<\/span><span class=\"token function\">HashTable<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span>size_t i <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> i <span class=\"token operator\">&lt;<\/span> _table<span class=\"token punctuation\">.<\/span><span class=\"token function\">size<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\nNode<span class=\"token operator\">*<\/span> cur <span class=\"token operator\">&#061;<\/span> _table<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span>cur<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\nNode<span class=\"token operator\">*<\/span> next <span class=\"token operator\">&#061;<\/span> cur<span class=\"token operator\">-&gt;<\/span>_next<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">delete<\/span> cur<span class=\"token punctuation\">;<\/span><br \/>\ncur <span class=\"token operator\">&#061;<\/span> next<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n_table<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">nullptr<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>pair<span class=\"token operator\">&lt;<\/span>iterator<span class=\"token punctuation\">,<\/span><span class=\"token keyword\">bool<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token function\">Insert<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> T<span class=\"token operator\">&amp;<\/span>data<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\nKeyOfT kot<span class=\"token punctuation\">;<\/span><br \/>\niterator it<span class=\"token operator\">&#061;<\/span><span class=\"token function\">Find<\/span><span class=\"token punctuation\">(<\/span><span class=\"token function\">kot<\/span><span class=\"token punctuation\">(<\/span>data<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">if<\/span><span class=\"token punctuation\">(<\/span>it<span class=\"token operator\">!&#061;<\/span><span class=\"token function\">end<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">return<\/span> <span class=\"token function\">make_pair<\/span><span class=\"token punctuation\">(<\/span>it<span class=\"token punctuation\">,<\/span><span class=\"token boolean\">false<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\nHashFunc hf<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/\/\u68c0\u67e5\u6269\u5bb9&#xff0c;\u8f7d\u8377\u56e0\u5b50\u52301\u5c31\u6269\u5bb9<\/span><br \/>\n<span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>_n <span class=\"token operator\">&#061;&#061;<\/span> _table<span class=\"token punctuation\">.<\/span><span class=\"token function\">size<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\nsize_t newsize <span class=\"token operator\">&#061;<\/span> _table<span class=\"token punctuation\">.<\/span><span class=\"token function\">size<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">*<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">;<\/span><br \/>\nvector<span class=\"token operator\">&lt;<\/span>Node<span class=\"token operator\">*<\/span><span class=\"token operator\">&gt;<\/span> newtable<span class=\"token punctuation\">;<\/span><br \/>\nnewtable<span class=\"token punctuation\">.<\/span><span class=\"token function\">resize<\/span><span class=\"token punctuation\">(<\/span>newsize<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">nullptr<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/\/\u904d\u5386\u65e7\u8868&#xff0c;\u5c06\u8282\u70b9\u8f6c\u79fb\u6302\u5230\u65b0\u8868<\/span><br \/>\n<span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span>size_t i <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> i <span class=\"token operator\">&lt;<\/span> _table<span class=\"token punctuation\">.<\/span><span class=\"token function\">size<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\nNode<span class=\"token operator\">*<\/span> cur <span class=\"token operator\">&#061;<\/span> _table<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/\/\u5728\u6570\u7ec4\u4e2d\u5411\u4e0b\u904d\u5386\u5904\u7406\u6bcf\u4e00\u4e2a\u54c8\u5e0c\u6876<\/span><br \/>\n<span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span>cur<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\nsize_t hashi <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">hf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token function\">kot<\/span><span class=\"token punctuation\">(<\/span>data<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">%<\/span> newsize<span class=\"token punctuation\">;<\/span><br \/>\nNode<span class=\"token operator\">*<\/span> next <span class=\"token operator\">&#061;<\/span> cur<span class=\"token operator\">-&gt;<\/span>_next<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/\/\u5934\u63d2<\/span><br \/>\ncur<span class=\"token operator\">-&gt;<\/span>_next <span class=\"token operator\">&#061;<\/span> newtable<span class=\"token punctuation\">[<\/span>hashi<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\nnewtable<span class=\"token punctuation\">[<\/span>hashi<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> cur<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/\/\u66f4\u65b0\u8282\u70b9<\/span><br \/>\ncur <span class=\"token operator\">&#061;<\/span> next<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n_table<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">nullptr<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token comment\">\/\/\u4ea4\u6362\u65b0\u65e7\u8868<\/span><br \/>\n_table<span class=\"token punctuation\">.<\/span><span class=\"token function\">swap<\/span><span class=\"token punctuation\">(<\/span>newtable<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/\u63d2\u5165\u65b0\u8282\u70b9<\/span><br \/>\nsize_t hashi <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">hf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token function\">kot<\/span><span class=\"token punctuation\">(<\/span>data<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">%<\/span> _table<span class=\"token punctuation\">.<\/span><span class=\"token function\">size<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\nNode<span class=\"token operator\">*<\/span> newnode <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token function\">Node<\/span><span class=\"token punctuation\">(<\/span>data<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\nnewnode<span class=\"token operator\">-&gt;<\/span>_next <span class=\"token operator\">&#061;<\/span> _table<span class=\"token punctuation\">[<\/span>hashi<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n_table<span class=\"token punctuation\">[<\/span>hashi<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> newnode<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token operator\">&#043;&#043;<\/span>_n<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">return<\/span> <span class=\"token function\">make_pair<\/span><span class=\"token punctuation\">(<\/span><span class=\"token function\">iterator<\/span><span class=\"token punctuation\">(<\/span>newnode<span class=\"token punctuation\">,<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><span class=\"token boolean\">true<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>iterator <span class=\"token function\">Find<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> K<span class=\"token operator\">&amp;<\/span> key<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\nKeyOfT kot<span class=\"token punctuation\">;<\/span><br \/>\nHashFunc hf<span class=\"token punctuation\">;<\/span><br \/>\nsize_t hashi <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">hf<\/span><span class=\"token punctuation\">(<\/span>key<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">%<\/span> _table<span class=\"token punctuation\">.<\/span><span class=\"token function\">size<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/\/\u5728\u8be5\u54c8\u5e0c\u6876\u4e2d\u904d\u5386\u5bfb\u627e<\/span><br \/>\nNode<span class=\"token operator\">*<\/span> cur <span class=\"token operator\">&#061;<\/span> _table<span class=\"token punctuation\">[<\/span>hashi<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span>cur<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token function\">kot<\/span><span class=\"token punctuation\">(<\/span>cur<span class=\"token operator\">-&gt;<\/span>_data<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;&#061;<\/span> key<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">return<\/span> <span class=\"token function\">iterator<\/span><span class=\"token punctuation\">(<\/span>cur<span class=\"token punctuation\">,<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\ncur <span class=\"token operator\">&#061;<\/span> cur<span class=\"token operator\">-&gt;<\/span>_next<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">return<\/span> <span class=\"token function\">end<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">bool<\/span> <span class=\"token function\">Erase<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> K<span class=\"token operator\">&amp;<\/span> key<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\nHashFunc hf<span class=\"token punctuation\">;<\/span><br \/>\nsize_t hashi <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">hf<\/span><span class=\"token punctuation\">(<\/span>key<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">%<\/span> _table<span class=\"token punctuation\">.<\/span><span class=\"token function\">size<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\nNode<span class=\"token operator\">*<\/span> cur <span class=\"token operator\">&#061;<\/span> _table<span class=\"token punctuation\">[<\/span>hashi<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\nNode<span class=\"token operator\">*<\/span> prev <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">nullptr<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span>cur<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token function\">kot<\/span><span class=\"token punctuation\">(<\/span>cur<span class=\"token operator\">-&gt;<\/span>_data<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;&#061;<\/span> key<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token comment\">\/\/\u5224\u65ad\u8981\u5220\u9664\u8282\u70b9\u4e3a\u5934\u8282\u70b9\u60c5\u51b5<\/span><br \/>\n<span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>prev <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token keyword\">nullptr<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n_table<span class=\"token punctuation\">[<\/span>hashi<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> cur<span class=\"token operator\">-&gt;<\/span>_next<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">else<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\nprev<span class=\"token operator\">-&gt;<\/span>_next <span class=\"token operator\">&#061;<\/span> cur<span class=\"token operator\">-&gt;<\/span>_next<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token operator\">&#8212;<\/span>_n<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">delete<\/span> cur<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">return<\/span> <span class=\"token boolean\">true<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token comment\">\/\/\u66f4\u65b0\u8282\u70b9\u7ee7\u7eed\u904d\u5386<\/span><br \/>\nprev <span class=\"token operator\">&#061;<\/span> cur<span class=\"token punctuation\">;<\/span><br \/>\ncur <span class=\"token operator\">&#061;<\/span> cur<span class=\"token operator\">-&gt;<\/span>_next<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">return<\/span> <span class=\"token boolean\">false<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">void<\/span> <span class=\"token function\">Print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span>size_t i <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> i <span class=\"token operator\">&lt;<\/span> _table<span class=\"token punctuation\">.<\/span><span class=\"token function\">size<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token function\">printf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;[%d]-&gt;&#034;<\/span><span class=\"token punctuation\">,<\/span> i<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\nNode<span class=\"token operator\">*<\/span> cur <span class=\"token operator\">&#061;<\/span> _table<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span>cur<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> cur<span class=\"token operator\">-&gt;<\/span>_kv<span class=\"token punctuation\">.<\/span>first <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;:&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> cur<span class=\"token operator\">-&gt;<\/span>_kv<span class=\"token punctuation\">.<\/span>second <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;-&gt;&#034;<\/span><span class=\"token punctuation\">;<\/span><br \/>\ncur <span class=\"token operator\">&#061;<\/span> cur<span class=\"token operator\">-&gt;<\/span>_next<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token function\">printf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;NULL\\\\n&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">private<\/span><span class=\"token operator\">:<\/span><br \/>\nvector<span class=\"token operator\">&lt;<\/span>Node<span class=\"token operator\">*<\/span><span class=\"token operator\">&gt;<\/span> _table<span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/\u6307\u9488\u6570\u7ec4<\/span><br \/>\nsize_t _n <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<ul>\n<li>\u6d4b\u8bd5\u4ee3\u7801<\/li>\n<\/ul>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span><span class=\"token string\">&lt;iostream&gt;<\/span><\/span><br \/>\n<span class=\"token keyword\">using<\/span> <span class=\"token keyword\">namespace<\/span> std<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span><span class=\"token string\">&#034;HashTable.h&#034;<\/span><\/span><\/p>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span><span class=\"token string\">&#034;UnOrderedSet.h&#034;<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span><span class=\"token string\">&#034;UnOrderedMap.h&#034;<\/span><\/span><\/p>\n<p><span class=\"token keyword\">int<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\nee<span class=\"token operator\">::<\/span>unordered_set<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span><span class=\"token operator\">&gt;<\/span> us<span class=\"token punctuation\">;<\/span><br \/>\nus<span class=\"token punctuation\">.<\/span><span class=\"token function\">insert<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\nus<span class=\"token punctuation\">.<\/span><span class=\"token function\">insert<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\nus<span class=\"token punctuation\">.<\/span><span class=\"token function\">insert<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\nus<span class=\"token punctuation\">.<\/span><span class=\"token function\">insert<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\nus<span class=\"token punctuation\">.<\/span><span class=\"token function\">insert<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">5<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\nus<span class=\"token punctuation\">.<\/span><span class=\"token function\">insert<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>ee<span class=\"token operator\">::<\/span>unordered_set<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span><span class=\"token operator\">&gt;<\/span><span class=\"token operator\">::<\/span>iterator it <span class=\"token operator\">&#061;<\/span> us<span class=\"token punctuation\">.<\/span><span class=\"token function\">begin<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span>it <span class=\"token operator\">!&#061;<\/span> us<span class=\"token punctuation\">.<\/span><span class=\"token function\">end<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token comment\">\/\/*it &#043;&#061; 10;\u4e0d\u80fd\u4fee\u6539key<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token operator\">*<\/span>it <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034; &#034;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token operator\">&#043;&#043;<\/span>it<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><\/p>\n<p>ee<span class=\"token operator\">::<\/span>unordered_map<span class=\"token operator\">&lt;<\/span>string<span class=\"token punctuation\">,<\/span> string<span class=\"token operator\">&gt;<\/span> dict<span class=\"token punctuation\">;<\/span><br \/>\ndict<span class=\"token punctuation\">.<\/span><span class=\"token function\">insert<\/span><span class=\"token punctuation\">(<\/span><span class=\"token function\">make_pair<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;sort&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;\u6392\u5e8f&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\ndict<span class=\"token punctuation\">.<\/span><span class=\"token function\">insert<\/span><span class=\"token punctuation\">(<\/span><span class=\"token function\">make_pair<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;left&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;\u5de6\u8fb9&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\ndict<span class=\"token punctuation\">.<\/span><span class=\"token function\">insert<\/span><span class=\"token punctuation\">(<\/span><span class=\"token function\">make_pair<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;insert&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;\u63d2\u5165&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\ndict<span class=\"token punctuation\">.<\/span><span class=\"token function\">insert<\/span><span class=\"token punctuation\">(<\/span><span class=\"token function\">make_pair<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;sort&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;xxx&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>ee<span class=\"token operator\">::<\/span>unordered_map<span class=\"token operator\">&lt;<\/span>string<span class=\"token punctuation\">,<\/span> string<span class=\"token operator\">&gt;<\/span><span class=\"token operator\">::<\/span>iterator dit <span class=\"token operator\">&#061;<\/span> dict<span class=\"token punctuation\">.<\/span><span class=\"token function\">begin<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span>dit <span class=\"token operator\">!&#061;<\/span> dict<span class=\"token punctuation\">.<\/span><span class=\"token function\">end<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token comment\">\/\/\u4e0d\u80fd\u4fee\u6539key<\/span><br \/>\n<span class=\"token comment\">\/\/dit-&gt;first &#043;&#061; &#039;e&#039;;<\/span><br \/>\ndit<span class=\"token operator\">-&gt;<\/span>second <span class=\"token operator\">&#043;&#061;<\/span> <span class=\"token string\">&#039;e&#039;<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>cout <span class=\"token operator\">&lt;&lt;<\/span> dit<span class=\"token operator\">-&gt;<\/span>first <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;:&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> dit<span class=\"token operator\">-&gt;<\/span>second <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token operator\">&#043;&#043;<\/span>dit<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\ndict<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;sort&#034;<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;\u6392\u5e8f&#034;<\/span><span class=\"token punctuation\">;<\/span><br \/>\ndict<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;insert&#034;<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;\u63d2\u5165&#034;<\/span><span class=\"token punctuation\">;<\/span><br \/>\ndict<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;string&#034;<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;\u5b57\u7b26\u4e32&#034;<\/span><span class=\"token punctuation\">;<\/span><br \/>\ndict<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;left&#034;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">auto<\/span><span class=\"token operator\">&amp;<\/span> kv <span class=\"token operator\">:<\/span> dict<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> kv<span class=\"token punctuation\">.<\/span>first <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;:&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> kv<span class=\"token punctuation\">.<\/span>second <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h3>2.\u5c01\u88c5unordered_set<\/h3>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">pragma<\/span> <span class=\"token expression\">once<\/span><\/span><br \/>\n<span class=\"token keyword\">namespace<\/span> ee<br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">template<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">K<\/span><span class=\"token operator\">&gt;<\/span><br \/>\n<span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">unordered_set<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">SetKeyOfT<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">const<\/span> K<span class=\"token operator\">&amp;<\/span> <span class=\"token keyword\">operator<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> K<span class=\"token operator\">&amp;<\/span> key<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">return<\/span> key<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">public<\/span><span class=\"token operator\">:<\/span><br \/>\n<span class=\"token keyword\">typedef<\/span> <span class=\"token keyword\">typename<\/span> <span class=\"token class-name\">hash_bucket<\/span><span class=\"token operator\">::<\/span>HashTable<span class=\"token operator\">&lt;<\/span>K<span class=\"token punctuation\">,<\/span> K<span class=\"token punctuation\">,<\/span> SetKeyOfT<span class=\"token operator\">&gt;<\/span><span class=\"token operator\">::<\/span>const_iterator iterator<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">typedef<\/span> <span class=\"token keyword\">typename<\/span> <span class=\"token class-name\">hash_bucket<\/span><span class=\"token operator\">::<\/span>HashTable<span class=\"token operator\">&lt;<\/span>K<span class=\"token punctuation\">,<\/span> K<span class=\"token punctuation\">,<\/span> SetKeyOfT<span class=\"token operator\">&gt;<\/span><span class=\"token operator\">::<\/span>const_iterator const_iterator<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/\u8fed\u4ee3\u5668\u5e95\u5c42\u90fd\u662fconst&#xff0c;\u76f4\u63a5\u5b9a\u4e49\u6210const\u5373\u53ef<\/span><br \/>\nconst_iterator <span class=\"token function\">begin<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token keyword\">const<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">return<\/span> _ht<span class=\"token punctuation\">.<\/span><span class=\"token function\">begin<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>const_iterator <span class=\"token function\">end<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token keyword\">const<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">return<\/span> _ht<span class=\"token punctuation\">.<\/span><span class=\"token function\">end<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>pair<span class=\"token operator\">&lt;<\/span>const_iterator<span class=\"token punctuation\">,<\/span><span class=\"token keyword\">bool<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token function\">insert<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> K<span class=\"token operator\">&amp;<\/span> key<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token comment\">\/\/return _ht.Insert(key);\u7f16\u8bd1\u5668\u4e25\u683c\u68c0\u67e5\u4e0b\u53ef\u80fd\u62a5\u9519<\/span><br \/>\npair<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">typename<\/span> <span class=\"token class-name\">hash_bucket<\/span><span class=\"token operator\">::<\/span>HashTable<span class=\"token operator\">&lt;<\/span>K<span class=\"token punctuation\">,<\/span> K<span class=\"token punctuation\">,<\/span> SetKeyOfT<span class=\"token operator\">&gt;<\/span><span class=\"token operator\">::<\/span>iterator<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">bool<\/span><span class=\"token operator\">&gt;<\/span> ret <span class=\"token operator\">&#061;<\/span> _ht<span class=\"token punctuation\">.<\/span><span class=\"token function\">Insert<\/span><span class=\"token punctuation\">(<\/span>key<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">return<\/span> pair<span class=\"token operator\">&lt;<\/span>const_iterator<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">bool<\/span><span class=\"token operator\">&gt;<\/span><span class=\"token punctuation\">(<\/span>ret<span class=\"token punctuation\">.<\/span>first<span class=\"token punctuation\">,<\/span> ret<span class=\"token punctuation\">.<\/span>second<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">private<\/span><span class=\"token operator\">:<\/span><br \/>\nhash_bucket<span class=\"token operator\">::<\/span>HashTable<span class=\"token operator\">&lt;<\/span>K<span class=\"token punctuation\">,<\/span> K<span class=\"token punctuation\">,<\/span> SetKeyOfT<span class=\"token operator\">&gt;<\/span> _ht<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u8fed\u4ee3\u5668\u5e95\u5c42\u90fd\u662fconst_iterator(\u786e\u4fdd\u952e\u503c\u4e0d\u80fd\u4fee\u6539)&#xff0c;\u4f1a\u9020\u6210\u8fd4\u56de\u503c\u7c7b\u578b\u4e0d\u5339\u914d&#xff0c;\u4e0emap\u548cset\u7684\u6a21\u62df\u5b9e\u73b0\u4e00\u6837&#xff0c;\u8fd9\u91cc\u89e3\u51b3\u529e\u6cd5\u76f8\u540c&#xff0c;\u5148\u7528\u54c8\u5e0c\u8868\u4e2d\u8fed\u4ee3\u5668\u63a5\u6536\u63d2\u5165\u540e\u7684\u8fd4\u56de\u503c\u666e\u901a\u8fed\u4ee3\u5668&#xff0c;\u5229\u7528\u5728\u54c8\u5e0c\u8868\u4e2d\u5199\u7684\u652f\u6301\u975econst\u8f6c\u5316\u4e3aconst\u8fed\u4ee3\u5668\u7684\u51fd\u6570\u6765\u6784\u9020\u51faconst\u8fed\u4ee3\u5668\u5e76\u8fd4\u56de\u3002<\/p>\n<h3>3.\u5c01\u88c5unordered_map<\/h3>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">pragma<\/span> <span class=\"token expression\">once<\/span><\/span><br \/>\n<span class=\"token keyword\">namespace<\/span> ee<br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">template<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">K<\/span><span class=\"token punctuation\">,<\/span><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">V<\/span><span class=\"token operator\">&gt;<\/span><br \/>\n<span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">unordered_map<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">MapKeyOfT<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">const<\/span> K<span class=\"token operator\">&amp;<\/span> <span class=\"token keyword\">operator<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> pair<span class=\"token operator\">&lt;<\/span>K<span class=\"token punctuation\">,<\/span>V<span class=\"token operator\">&gt;<\/span><span class=\"token operator\">&amp;<\/span> kv<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">return<\/span> kv<span class=\"token punctuation\">.<\/span>first<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">public<\/span><span class=\"token operator\">:<\/span><br \/>\n<span class=\"token keyword\">typedef<\/span> <span class=\"token keyword\">typename<\/span> <span class=\"token class-name\">hash_bucket<\/span><span class=\"token operator\">::<\/span>HashTable<span class=\"token operator\">&lt;<\/span>K<span class=\"token punctuation\">,<\/span> pair<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">const<\/span> K<span class=\"token punctuation\">,<\/span>V<span class=\"token operator\">&gt;<\/span><span class=\"token punctuation\">,<\/span> MapKeyOfT<span class=\"token operator\">&gt;<\/span><span class=\"token operator\">::<\/span>iterator iterator<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">typedef<\/span> <span class=\"token keyword\">typename<\/span> <span class=\"token class-name\">hash_bucket<\/span><span class=\"token operator\">::<\/span>HashTable<span class=\"token operator\">&lt;<\/span>K<span class=\"token punctuation\">,<\/span> pair<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">const<\/span> K<span class=\"token punctuation\">,<\/span> V<span class=\"token operator\">&gt;<\/span><span class=\"token punctuation\">,<\/span> MapKeyOfT<span class=\"token operator\">&gt;<\/span><span class=\"token operator\">::<\/span>const_iterator const_iterator<span class=\"token punctuation\">;<\/span><\/p>\n<p>iterator <span class=\"token function\">begin<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">return<\/span> _ht<span class=\"token punctuation\">.<\/span><span class=\"token function\">begin<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>iterator <span class=\"token function\">end<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">return<\/span> _ht<span class=\"token punctuation\">.<\/span><span class=\"token function\">end<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>const_iterator <span class=\"token function\">begin<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token keyword\">const<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">return<\/span> _ht<span class=\"token punctuation\">.<\/span><span class=\"token function\">begin<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>const_iterator <span class=\"token function\">end<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token keyword\">const<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">return<\/span> _ht<span class=\"token punctuation\">.<\/span><span class=\"token function\">end<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>pair<span class=\"token operator\">&lt;<\/span>iterator<span class=\"token punctuation\">,<\/span><span class=\"token keyword\">bool<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token function\">insert<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> pair<span class=\"token operator\">&lt;<\/span>K<span class=\"token punctuation\">,<\/span>V<span class=\"token operator\">&gt;<\/span><span class=\"token operator\">&amp;<\/span> kv<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">return<\/span> _ht<span class=\"token punctuation\">.<\/span><span class=\"token function\">Insert<\/span><span class=\"token punctuation\">(<\/span>kv<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>V<span class=\"token operator\">&amp;<\/span> <span class=\"token keyword\">operator<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> K<span class=\"token operator\">&amp;<\/span>key<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\npair<span class=\"token operator\">&lt;<\/span>iterator<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">bool<\/span><span class=\"token operator\">&gt;<\/span> ret <span class=\"token operator\">&#061;<\/span> _ht<span class=\"token punctuation\">.<\/span><span class=\"token function\">Insert<\/span><span class=\"token punctuation\">(<\/span><span class=\"token function\">make_pair<\/span><span class=\"token punctuation\">(<\/span>key<span class=\"token punctuation\">,<\/span> <span class=\"token function\">V<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">return<\/span> ret<span class=\"token punctuation\">.<\/span>first<span class=\"token operator\">-&gt;<\/span>second<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">private<\/span><span class=\"token operator\">:<\/span><br \/>\nhash_bucket<span class=\"token operator\">::<\/span>HashTable<span class=\"token operator\">&lt;<\/span>K<span class=\"token punctuation\">,<\/span> pair<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">const<\/span> K<span class=\"token punctuation\">,<\/span>V<span class=\"token operator\">&gt;<\/span><span class=\"token punctuation\">,<\/span> MapKeyOfT<span class=\"token operator\">&gt;<\/span> _ht<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u8fd9\u91cc\u63d2\u5165\u5c31\u4e0d\u4f1a\u6709set\u7684\u8fed\u4ee3\u5668\u8fd4\u56de\u503c\u7c7b\u578b\u4e0d\u5339\u914d\u7684\u95ee\u9898&#xff0c;\u5e38\u91cf\u8fed\u4ee3\u5668\u548c\u666e\u901a\u8fed\u4ee3\u5668\u5e95\u5c42\u5c31\u662f\u5176\u672c\u8eab\u3002 []\u91cd\u8f7d&#xff1a; \u8fd4\u56de\u503c &#xff1a;\u8fd4\u56de\u7c7b\u578b\u4e3a V&amp;&#xff0c;\u5373\u952e\u5bf9\u5e94\u7684\u503c\u7684\u5f15\u7528\u3002\u5982\u679c\u952e\u4e0d\u5b58\u5728&#xff0c;\u5219\u63d2\u5165\u4e00\u4e2a\u9ed8\u8ba4\u6784\u9020\u7684\u503c\u5e76\u8fd4\u56de\u5176\u5f15\u7528\u3002 Insert \u65b9\u6cd5 &#xff1a;\u5c1d\u8bd5\u5c06\u952e\u503c\u5bf9\u63d2\u5165\u54c8\u5e0c\u8868\u3002\u5982\u679c\u952e\u5df2\u5b58\u5728&#xff0c;Insert \u8fd4\u56de\u4e00\u4e2a pair&#xff0c;\u5176\u4e2d\u8fed\u4ee3\u5668\u6307\u5411\u5df2\u5b58\u5728\u7684\u952e\u503c\u5bf9&#xff0c;bool \u503c\u4e3a false&#xff1b;\u5982\u679c\u952e\u4e0d\u5b58\u5728&#xff0c;Insert \u63d2\u5165\u952e\u503c\u5bf9\u5e76\u8fd4\u56de\u4e00\u4e2a pair&#xff0c;\u5176\u4e2d\u8fed\u4ee3\u5668\u6307\u5411\u65b0\u63d2\u5165\u7684\u952e\u503c\u5bf9,bool \u503c\u4e3a true\u3002 \u8fd4\u56de\u503c\u5f15\u7528 &#xff1a;ret.first-&gt;second 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