{"id":113938,"date":"2026-10-07T23:18:13","date_gmt":"2026-10-07T15:18:13","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/113938.html"},"modified":"2026-10-07T23:18:13","modified_gmt":"2026-10-07T15:18:13","slug":"stack%e3%80%81queue-%e4%b8%8e-priority_queue%ef%bc%88%e4%bc%98%e5%85%88%e7%ba%a7%e9%98%9f%e5%88%97%ef%bc%89%ef%bc%9a%e4%bb%8e%e5%ba%95%e5%b1%82%e8%ae%bf%e9%97%ae%e8%a7%84%e5%88%99%e7%90%86%e8%a7%a3","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/113938.html","title":{"rendered":"stack\u3001queue \u4e0e priority_queue\uff08\u4f18\u5148\u7ea7\u961f\u5217\uff09\uff1a\u4ece\u5e95\u5c42\u8bbf\u95ee\u89c4\u5219\u7406\u89e3\u5bb9\u5668\u9002\u914d\u5668"},"content":{"rendered":"<\/p>\n<h4>\u6587\u7ae0\u76ee\u5f55<\/h4>\n<ul>\n<li>\n<ul>\n<li>1. \u76f8\u540c\u7684\u6570\u636e&#xff0c;\u53ef\u4ee5\u6709\u4e09\u79cd\u53d6\u51fa\u89c4\u5219<\/li>\n<li>2. stack \u4e0e queue&#xff1a;\u63a5\u53e3\u7b80\u5355&#xff0c;\u4f46\u4f7f\u7528\u4e60\u60ef\u4e0d\u80fd\u542b\u7cca<\/li>\n<li>\n<ul>\n<li>2.1 \u5148\u7528\u4e00\u4e2a\u5c0f\u7a0b\u5e8f\u89c2\u5bdf<\/li>\n<li>2.2 \u7528\u4e00\u5f20\u8868\u628a\u5171\u540c\u70b9\u4e0e\u533a\u522b\u653e\u5728\u4e00\u8d77<\/li>\n<li>2.3 \u4e3a\u4ec0\u4e48\u6ca1\u6709 begin \u548c end<\/li>\n<\/ul>\n<\/li>\n<li>3. \u5bb9\u5668\u9002\u914d\u5668&#xff1a;\u590d\u7528\u5b58\u50a8&#xff0c;\u6539\u53d8\u4f7f\u7528\u65b9\u5f0f<\/li>\n<li>\n<ul>\n<li>3.1 \u201c\u518d\u5305\u4e00\u5c42\u201d\u4e0d\u662f\u91cd\u65b0\u5199\u4e00\u4e2a\u5bb9\u5668<\/li>\n<li>3.2 \u4e0e\u8bbe\u8ba1\u6a21\u5f0f\u7684\u5173\u7cfb<\/li>\n<\/ul>\n<\/li>\n<li>4. \u53ef\u66ff\u6362\u5e95\u5c42\u5bb9\u5668&#xff0c;\u5148\u770b\u5b83\u63d0\u4f9b\u4ec0\u4e48<\/li>\n<li>\n<ul>\n<li>4.1 \u7b2c\u4e8c\u4e2a\u6a21\u677f\u53c2\u6570<\/li>\n<li>4.2 deque&#xff1a;\u903b\u8f91\u4e0a\u662f\u4e00\u5217&#xff0c;\u5178\u578b\u5b9e\u73b0\u4e2d\u5206\u6bb5\u5b58\u50a8<\/li>\n<li>4.3 \u4e3a\u4ec0\u4e48\u9ed8\u8ba4\u9009 deque<\/li>\n<\/ul>\n<\/li>\n<li>5. \u4e24\u4e2a\u9002\u914d\u5668\u7684\u7b80\u77ed\u5b9e\u73b0<\/li>\n<li>\n<ul>\n<li>5.1 \u6808&#xff1a;\u628a\u5c3e\u90e8\u5f53\u4f5c\u552f\u4e00\u5165\u53e3\u548c\u51fa\u53e3<\/li>\n<li>5.2 \u961f\u5217&#xff1a;\u53ea\u628a\u5220\u9664\u64cd\u4f5c\u6362\u5230\u5934\u90e8<\/li>\n<li>5.3 \u4e3a\u4ec0\u4e48\u6ca1\u6709\u518d\u6b21\u624b\u5199\u6790\u6784\u3001\u6df1\u62f7\u8d1d\u4e0e\u8d4b\u503c<\/li>\n<\/ul>\n<\/li>\n<li>6. priority_queue&#xff1a;\u6bcf\u6b21\u7ed9\u51fa\u5f53\u524d\u6700\u9ad8\u4f18\u5148\u7ea7<\/li>\n<li>\n<ul>\n<li>6.1 \u9ed8\u8ba4\u5927\u5806\u4e0e\u5c0f\u5806\u7684\u7528\u6cd5<\/li>\n<li>6.2 \u7528\u6570\u7ec4\u8868\u793a\u6811&#xff0c;\u4e0d\u7b49\u4e8e\u628a\u6570\u7ec4\u6392\u597d\u5e8f<\/li>\n<\/ul>\n<\/li>\n<li>7. \u6bd4\u8f83\u5668\u4e0e\u5806\u8c03\u6574&#xff1a;\u89c4\u5219\u5982\u4f55\u53d8\u6210\u7b97\u6cd5<\/li>\n<li>\n<ul>\n<li>7.1 less \u4e3a\u4ec0\u4e48\u5bf9\u5e94\u5927\u5806<\/li>\n<li>7.2 \u63d2\u5165&#xff1a;\u65b0\u5143\u7d20\u53ea\u53ef\u80fd\u7834\u574f\u7956\u5148\u8def\u5f84<\/li>\n<li>7.3 \u5220\u9664&#xff1a;\u5148\u7528\u672b\u5c3e\u5143\u7d20\u586b\u6839&#xff0c;\u518d\u5411\u4e0b\u8c03\u6574<\/li>\n<li>7.4 \u628a\u5b58\u50a8\u3001\u6bd4\u8f83\u548c\u8c03\u6574\u7ec4\u5408\u8d77\u6765<\/li>\n<li>7.5 \u590d\u6742\u5ea6&#xff1a;\u628a\u5806\u7b97\u6cd5\u4e0e\u5bb9\u5668\u64cd\u4f5c\u5206\u5f00\u770b<\/li>\n<\/ul>\n<\/li>\n<li>8. \u6269\u5c55\u7ec3\u4e60<\/li>\n<li>\n<ul>\n<li>8.1 \u7528\u4e24\u4e2a\u6808\u5b9e\u73b0\u6700\u5c0f\u6808<\/li>\n<li>8.2 \u7528\u4e24\u4e2a\u6808\u5b9e\u73b0\u5148\u8fdb\u5148\u51fa\u961f\u5217<\/li>\n<\/ul>\n<\/li>\n<li>9. \u603b\u7ed3<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>\u4ee3\u7801\u4ed3\u5e93&#xff1a;\u300astack queue\u7684\u6a21\u62df\u5b9e\u73b0\u300b<\/p>\n<h3>1. \u76f8\u540c\u7684\u6570\u636e&#xff0c;\u53ef\u4ee5\u6709\u4e09\u79cd\u53d6\u51fa\u89c4\u5219<\/h3>\n<hr \/>\n<p>\u5f53\u6211\u4eec\u4f9d\u6b21\u5728\u5bb9\u5668\u4e2d\u653e\u5165 1\u30013\u30012\u30015\u30014\u30016&#xff0c;\u63a5\u7740\u518d\u628a\u5143\u7d20\u5168\u90e8\u53d6\u51fa&#xff1a;<\/p>\n<table>\n<tr>\u5bf9\u8c61\u53d6\u51fa\u987a\u5e8f\u51b3\u5b9a\u4e0b\u4e00\u6b21\u53d6\u51fa\u8c01\u7684\u89c4\u5219<\/tr>\n<tbody>\n<tr>\n<td>stack<\/td>\n<td>6 4 5 2 3 1<\/td>\n<td>\u6700\u540e\u653e\u8fdb\u53bb\u7684\u5148\u51fa&#xff0c;LIFO<\/td>\n<\/tr>\n<tr>\n<td>queue<\/td>\n<td>1 3 2 5 4 6<\/td>\n<td>\u6700\u5148\u653e\u8fdb\u53bb\u7684\u5148\u51fa&#xff0c;FIFO<\/td>\n<\/tr>\n<tr>\n<td>\u9ed8\u8ba4\u7684 priority_queue&lt;int&gt;<\/td>\n<td>6 5 4 3 2 1<\/td>\n<td>\u5f53\u524d\u6700\u5927\u503c\u5148\u51fa\u6765<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u9700\u8981\u6ce8\u610f\u7684\u662f&#xff0c;\u8fd9\u91cc\u770b\u7684\u662f\u201c\u6bcf\u6b21\u8bbf\u95ee\u6307\u5b9a\u4f4d\u7f6e&#xff0c;\u7136\u540e\u5220\u9664\u8be5\u5143\u7d20\u4e4b\u540e\u7ee7\u7eed\u201d\u7684\u7ed3\u679c&#xff0c;\u4e0d\u662f\u904d\u5386\u5e95\u5c42\u5b58\u50a8\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/10\/20261007151806-6ac662ae715d7.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<p>\u6808\u53ef\u4ee5\u653e\u5728\u6570\u7ec4\u4e0a&#xff0c;\u4e5f\u53ef\u4ee5\u653e\u5728\u94fe\u8868\u4e0a&#xff1b;\u961f\u5217\u53ef\u4ee5\u7528\u94fe\u8868&#xff0c;\u4e5f\u53ef\u4ee5\u7528\u53cc\u7aef\u961f\u5217\u3002<\/p>\n<p>\u4e00\u4e2a\u6709\u6548\u7684\u7406\u89e3\u987a\u5e8f\u662f&#xff1a;\u5148\u60f3\u60f3\u4e0b\u4e00\u6b21\u5e94\u8be5\u5904\u7406\u8c01&#xff0c;\u7136\u540e\u518d\u627e\u5408\u9002\u7684\u63a5\u53e3&#xff0c;\u800c\u4e0d\u662f\u770b\u5230\u201c\u5b58\u4e00\u7ec4\u6570\u636e\u201d\u5c31\u76f4\u63a5\u9009\u62e9\u4e00\u4e2a\u53ef\u4ee5\u4efb\u610f\u8bbf\u95ee\u7684\u5bb9\u5668\u3002<\/p>\n<ul>\n<li>\u9700\u8981\u64a4\u9500\u6700\u8fd1\u4e00\u6b65\u64cd\u4f5c&#xff0c;\u9002\u5408\u540e\u8fdb\u5148\u51fa\u7684\u89c4\u5219\u3002<\/li>\n<li>\u9700\u8981\u6309\u5230\u8fbe\u987a\u5e8f\u5904\u7406\u4efb\u52a1&#xff0c;\u9002\u5408\u5148\u8fdb\u5148\u51fa\u7684\u89c4\u5219\u3002<\/li>\n<li>\u9700\u8981\u4e0d\u65ad\u5904\u7406\u5f53\u524d\u4f18\u5148\u7ea7\u6700\u9ad8\u7684\u4efb\u52a1&#xff0c;\u9002\u5408\u4f18\u5148\u7ea7\u961f\u5217\u3002<\/li>\n<\/ul>\n<h3>2. stack \u4e0e queue&#xff1a;\u63a5\u53e3\u7b80\u5355&#xff0c;\u4f46\u4f7f\u7528\u4e60\u60ef\u4e0d\u80fd\u542b\u7cca<\/h3>\n<hr \/>\n<h4>2.1 \u5148\u7528\u4e00\u4e2a\u5c0f\u7a0b\u5e8f\u89c2\u5bdf<\/h4>\n<p>stack \u7684\u5934\u6587\u4ef6\u662f &lt;stack&gt;&#xff0c;queue \u548c priority_queue \u7684\u5934\u6587\u4ef6\u90fd\u662f &lt;queue&gt;\u3002<\/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\">&lt;iostream&gt;<\/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\">&lt;stack&gt;<\/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\">&lt;queue&gt;<\/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 \/>\n    std<span class=\"token double-colon punctuation\">::<\/span>stack<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span><span class=\"token operator\">&gt;<\/span> stack<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token comment\">\/\/\u538b\u68081 2 3 4 5<\/span><br \/>\n    <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> value <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span> value <span class=\"token operator\">&lt;&#061;<\/span> <span class=\"token number\">5<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token operator\">&#043;&#043;<\/span>value<span class=\"token punctuation\">)<\/span> stack<span class=\"token punctuation\">.<\/span><span class=\"token function\">push<\/span><span class=\"token punctuation\">(<\/span>value<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token comment\">\/\/\u8f93\u51fa\u6808\u5f53\u524d\u5143\u7d20\u4e2a\u6570<\/span><br \/>\n    std<span class=\"token double-colon punctuation\">::<\/span>cout <span class=\"token operator\">&lt;&lt;<\/span> stack<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\">&lt;&lt;<\/span> std<span class=\"token double-colon punctuation\">::<\/span>endl<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token comment\">\/\/\u9010\u4e2a\u6253\u5370\u6808\u5143\u7d20<\/span><br \/>\n    <span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span>stack<span class=\"token punctuation\">.<\/span><span class=\"token function\">empty<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        std<span class=\"token double-colon punctuation\">::<\/span>cout <span class=\"token operator\">&lt;&lt;<\/span> stack<span class=\"token punctuation\">.<\/span><span class=\"token function\">top<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token punctuation\">(<\/span>stack<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\">&#061;&#061;<\/span> <span class=\"token number\">1<\/span> <span class=\"token operator\">?<\/span> <span class=\"token char\">&#039;\\\\n&#039;<\/span> <span class=\"token operator\">:<\/span> <span class=\"token char\">&#039; &#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        stack<span class=\"token punctuation\">.<\/span><span class=\"token function\">pop<\/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    std<span class=\"token double-colon punctuation\">::<\/span>cout <span class=\"token operator\">&lt;&lt;<\/span> std<span class=\"token double-colon punctuation\">::<\/span>endl<span class=\"token punctuation\">;<\/span><\/p>\n<p>    std<span class=\"token double-colon punctuation\">::<\/span>queue<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span><span class=\"token operator\">&gt;<\/span> queue<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token comment\">\/\/\u5165\u961f\u52171 2 3 4 5 6<\/span><br \/>\n    <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> value <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span> value <span class=\"token operator\">&lt;&#061;<\/span> <span class=\"token number\">5<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token operator\">&#043;&#043;<\/span>value<span class=\"token punctuation\">)<\/span> queue<span class=\"token punctuation\">.<\/span><span class=\"token function\">push<\/span><span class=\"token punctuation\">(<\/span>value<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token comment\">\/\/\u8f93\u51fa\u961f\u5217\u5f53\u524d\u5143\u7d20\u4e2a\u6570<\/span><br \/>\n    std<span class=\"token double-colon punctuation\">::<\/span>cout <span class=\"token operator\">&lt;&lt;<\/span> queue<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\">&lt;&lt;<\/span> std<span class=\"token double-colon punctuation\">::<\/span>endl<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token comment\">\/\/\u6309\u987a\u5e8f\u6253\u5370\u6808\u5143\u7d20<\/span><br \/>\n    <span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span>queue<span class=\"token punctuation\">.<\/span><span class=\"token function\">empty<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        std<span class=\"token double-colon punctuation\">::<\/span>cout <span class=\"token operator\">&lt;&lt;<\/span> queue<span class=\"token punctuation\">.<\/span><span class=\"token function\">front<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token punctuation\">(<\/span>queue<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\">&#061;&#061;<\/span> <span class=\"token number\">1<\/span> <span class=\"token operator\">?<\/span> <span class=\"token char\">&#039;\\\\n&#039;<\/span> <span class=\"token operator\">:<\/span> <span class=\"token char\">&#039; &#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        queue<span class=\"token punctuation\">.<\/span><span class=\"token function\">pop<\/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    std<span class=\"token double-colon punctuation\">::<\/span>cout <span class=\"token operator\">&lt;&lt;<\/span> std<span class=\"token double-colon punctuation\">::<\/span>endl<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<p>\u8fd0\u884c\u793a\u4f8b&#xff1a;<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/10\/20261007151807-6ac662af6a290.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<p>\u5165\u6808\u548c\u5165\u961f\u90fd\u662f push&#xff0c;\u533a\u522b\u5728\u53d6\u51fa\u4f4d\u7f6e\u3002\u6808\u67e5\u770b top()&#xff0c;\u961f\u5217\u67e5\u770b front()&#xff1b;\u4e24\u8005\u90fd\u7528 pop() \u5220\u9664\u5f53\u524d\u5e94\u53d6\u51fa\u7684\u5143\u7d20\u3002<\/p>\n<h4>2.2 \u7528\u4e00\u5f20\u8868\u628a\u5171\u540c\u70b9\u4e0e\u533a\u522b\u653e\u5728\u4e00\u8d77<\/h4>\n<table>\n<tr>\u64cd\u4f5cstack&lt;T&gt;queue&lt;T&gt;\u8981\u6ce8\u610f\u4ec0\u4e48<\/tr>\n<tbody>\n<tr>\n<td>\u9ed8\u8ba4\u6784\u9020<\/td>\n<td>\u7a7a\u6808<\/td>\n<td>\u7a7a\u961f\u5217<\/td>\n<td>\u6b64\u65f6\u53ea\u80fd\u67e5\u8be2\u662f\u5426\u4e3a\u7a7a\u548c\u6570\u91cf&#xff0c;\u4e0d\u80fd\u8bbf\u95ee\u5143\u7d20<\/td>\n<\/tr>\n<tr>\n<td>push(x)<\/td>\n<td>\u538b\u5165\u6808\u9876<\/td>\n<td>\u52a0\u5165\u961f\u5c3e<\/td>\n<td>\u4fdd\u5b58\u7684\u662f\u5143\u7d20\u526f\u672c<\/td>\n<\/tr>\n<tr>\n<td>pop()<\/td>\n<td>\u5220\u9664\u6808\u9876<\/td>\n<td>\u5220\u9664\u961f\u5934<\/td>\n<td>\u8fd4\u56de void&#xff0c;\u4e0d\u8fd4\u56de\u88ab\u5220\u9664\u7684\u503c<\/td>\n<\/tr>\n<tr>\n<td>\u8bbf\u95ee<\/td>\n<td>top()<\/td>\n<td>front()\u3001back()<\/td>\n<td>\u5bf9\u8c61\u5fc5\u987b\u975e\u7a7a&#xff1b;\u975e const \u5bf9\u8c61\u53ef\u4ee5\u901a\u8fc7\u5f15\u7528\u4fee\u6539\u503c<\/td>\n<\/tr>\n<tr>\n<td>empty()<\/td>\n<td>\u662f\u5426\u4e3a\u7a7a<\/td>\n<td>\u662f\u5426\u4e3a\u7a7a<\/td>\n<td>\u5b89\u5168\u5730\u51b3\u5b9a\u80fd\u5426\u8fdb\u884c\u4e0b\u4e00\u6b65\u8bbf\u95ee\u6216\u5220\u9664<\/td>\n<\/tr>\n<tr>\n<td>size()<\/td>\n<td>\u5143\u7d20\u6570\u91cf<\/td>\n<td>\u5143\u7d20\u6570\u91cf<\/td>\n<td>\u8fd4\u56de\u65e0\u7b26\u53f7\u6570\u91cf\u7c7b\u578b&#xff0c;\u4e0d\u7528\u5b83\u8868\u8fbe\u8d1f\u6570<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u4e0d\u8981\u8bef\u5199\u6210 int value &#061; s.pop();\u3002\u6b63\u786e\u987a\u5e8f\u662f&#xff1a;\u5148\u786e\u8ba4\u975e\u7a7a&#xff0c;\u518d\u8bfb\u53d6\u6216\u590d\u5236\u5f53\u524d\u5143\u7d20&#xff0c;\u6700\u540e\u5220\u9664\u3002<\/p>\n<p><span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span>s<span class=\"token punctuation\">.<\/span><span class=\"token function\">empty<\/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\">int<\/span> value <span class=\"token operator\">&#061;<\/span> s<span class=\"token punctuation\">.<\/span><span class=\"token function\">top<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    s<span class=\"token punctuation\">.<\/span><span class=\"token function\">pop<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token comment\">\/\/ value \u662f\u72ec\u7acb\u6574\u6570&#xff0c;\u540e\u9762\u53ef\u4ee5\u7ee7\u7eed\u4f7f\u7528\u3002<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u4e3a\u4ec0\u4e48\u8fd9\u91cc\u5206\u6210\u4e24\u4e2a\u51fd\u6570\u5462&#xff1f;\u8bbf\u95ee\u53ea\u89c2\u5bdf\u6216\u4fee\u6539\u5143\u7d20&#xff0c;\u5220\u9664\u5219\u6539\u53d8\u5bf9\u8c61\u72b6\u6001&#xff1b;\u5206\u79bb\u540e\u53ef\u4ee5\u53ea\u770b\u800c\u4e0d\u5220&#xff0c;\u4e5f\u53ef\u4ee5\u5148\u628a\u503c\u4fdd\u5b58\u4e0b\u6765\u518d\u5220\u3002\u8fd9\u6837\u4e5f\u907f\u514d\u4e86\u628a\u201c\u590d\u5236\u8fd4\u56de\u503c\u201d\u548c\u201c\u5220\u9664\u5b58\u50a8\u201d\u7ed1\u5b9a\u6210\u4e00\u4e2a\u53ef\u80fd\u5931\u8d25\u7684\u52a8\u4f5c\u3002<\/p>\n<h4>2.3 \u4e3a\u4ec0\u4e48\u6ca1\u6709 begin \u548c end<\/h4>\n<p>\u6807\u51c6 stack\u3001queue \u6ca1\u6709\u666e\u901a\u8fed\u4ee3\u63a5\u53e3&#xff0c;\u4e5f\u6ca1\u6709\u4e0b\u6807\u8bbf\u95ee\u3002<\/p>\n<li>\u8bbe\u8ba1\u5b9a\u4f4d&#xff1a;\u5bb9\u5668\u9002\u914d\u5668&#xff0c;\u5e76\u4e0d\u662f\u666e\u901a\u5bb9\u5668 stack\u3001queue\u672c\u8eab\u5e76\u4e0d\u4e3b\u8981\u7528\u6765\u5b58\u50a8\u6570\u636e&#xff0c;\u53ea\u662f\u5bf9\u5e95\u5c42\u5bb9\u5668&#xff08;\u9ed8\u8ba4deque&#xff09;\u505a\u4e00\u5c42\u5305\u88c5&#xff0c;\u7528\u6765\u5f3a\u5236\u7ea6\u675f\u8bbf\u95ee\u89c4\u5219\u3002<\/li>\n<ul>\n<li>stack&#xff1a;\u53ea\u5141\u8bb8\u8bbf\u95ee\u6808\u9876top()<\/li>\n<li>queue&#xff1a;\u53ea\u5141\u8bb8\u8bbf\u95ee\u961f\u5934front()\u3001\u961f\u5c3eback()<\/li>\n<\/ul>\n<li>\u8bed\u4e49\u4e0a\u5c31\u4e0d\u5141\u8bb8\u968f\u610f\u904d\u5386\u4e2d\u95f4\u5143\u7d20 \u5982\u679c\u63d0\u4f9b\u4e86begin()\u548cend()\u8fed\u4ee3\u5668&#xff0c;\u90a3\u5c31\u53ef\u4ee5\u5bf9\u5176\u904d\u5386\u3001\u4fee\u6539\u4e2d\u95f4\u4f4d\u7f6e\u7684\u5143\u7d20&#xff0c;\u8fd9\u6837\u5c31\u76f4\u63a5\u7834\u574f\u4e86\u6808 \u201c\u53ea\u80fd\u64cd\u4f5c\u6808\u9876\u201d\u3001\u961f\u5217 \u201c\u53ea\u80fd\u64cd\u4f5c\u5934\u5c3e\u201d \u7684\u7ea6\u675f\u3002<\/li>\n<p>\u6808 \/ \u961f\u5217\u7684\u672c\u610f&#xff1a;\u4f60\u4e0d\u5e94\u8be5\u770b\u5230\u3001\u4fee\u6539\u4e2d\u95f4\u7684\u6570\u636e&#xff0c;\u53ea\u80fd\u6309\u89c4\u5219\u589e\u5220\u53d6\u8fb9\u754c\u5143\u7d20\u3002<\/p>\n<h3>3. \u5bb9\u5668\u9002\u914d\u5668&#xff1a;\u590d\u7528\u5b58\u50a8&#xff0c;\u6539\u53d8\u4f7f\u7528\u65b9\u5f0f<\/h3>\n<hr \/>\n<h4>3.1 \u201c\u518d\u5305\u4e00\u5c42\u201d\u4e0d\u662f\u91cd\u65b0\u5199\u4e00\u4e2a\u5bb9\u5668<\/h4>\n<p>\u53ef\u4ee5\u770b\u770b\u4e00\u4e9b\u76f4\u63a5\u7684\u529f\u80fd\u6620\u5c04\u5173\u7cfb&#xff1a;<\/p>\n<table>\n<tr>\u5bf9\u5916\u64cd\u4f5c\u6808\u5982\u4f55\u8c03\u7528\u5e95\u5c42\u5bb9\u5668\u961f\u5217\u5982\u4f55\u8c03\u7528\u5e95\u5c42\u5bb9\u5668<\/tr>\n<tbody>\n<tr>\n<td>push(x)<\/td>\n<td>push_back(x)<\/td>\n<td>push_back(x)<\/td>\n<\/tr>\n<tr>\n<td>pop()<\/td>\n<td>pop_back()<\/td>\n<td>pop_front()<\/td>\n<\/tr>\n<tr>\n<td>\u5f53\u524d\u53ef\u5904\u7406\u5143\u7d20<\/td>\n<td>back()<\/td>\n<td>front()<\/td>\n<\/tr>\n<tr>\n<td>\u5176\u4ed6\u89c2\u5bdf<\/td>\n<td>empty()\u3001size()<\/td>\n<td>back()\u3001empty()\u3001size()<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u6808\u628a\u5bb9\u5668\u672b\u5c3e\u5f53\u4f5c\u6808\u9876\u3002\u961f\u5217\u628a\u5934\u90e8\u5f53\u961f\u5934&#xff0c;\u5c3e\u90e8\u5f53\u961f\u5c3e\u3002<\/p>\n<p>\u76f8\u6bd4\u6808\u4e0e\u961f\u5217\u6765\u8bf4&#xff0c;\u5176\u5e95\u5c42\u5bb9\u5668\u62e5\u6709\u66f4\u591a\u80fd\u529b&#xff0c;\u4f46\u9002\u914d\u5668\u4e0d\u628a\u90a3\u4e9b\u80fd\u529b\u5168\u90e8\u4ea4\u7ed9\u4f7f\u7528\u8005\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/10\/20261007151807-6ac662af72622.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h4>3.2 \u4e0e\u8bbe\u8ba1\u6a21\u5f0f\u7684\u5173\u7cfb<\/h4>\n<p>\u8bbe\u8ba1\u6a21\u5f0f\u662f\u5bf9\u53cd\u590d\u51fa\u73b0\u7684\u8bbe\u8ba1\u95ee\u9898\u4e0e\u89e3\u51b3\u529e\u6cd5\u7684\u603b\u7ed3&#xff0c;\u4e0d\u662f\u4e00\u7ec4\u5fc5\u987b\u80cc\u4e0b\u6765\u7684\u7279\u6b8a\u8bed\u6cd5\u3002<\/p>\n<p>\u9002\u914d\u5668\u6a21\u5f0f\u7684\u6838\u5fc3\u662f&#xff1a;\u628a\u5df2\u6709\u63a5\u53e3\u8f6c\u6362\u4e3a\u4f7f\u7528\u65b9\u9700\u8981\u7684\u63a5\u53e3\u3002<\/p>\n<p>\u4e00\u4e2a\u901a\u4fd7\u7684\u4f8b\u5b50\u5e2e\u52a9\u7406\u89e3&#xff1a; \u7535\u6e90\u8f6c\u6362\u5934&#xff1a;\u63d2\u5ea7\u662f\u5df2\u6709\u63a5\u53e3&#xff0c;\u4f60\u7684\u5145\u7535\u5668\u63d2\u5934\u89c4\u683c\u4e0d\u4e00\u6837&#xff0c;\u8f6c\u6362\u5668\u5c31\u7528\u6765\u505a\u9002\u914d&#xff1b;\u5c31\u50cf deque \u662f\u5e95\u5c42\u5bb9\u5668&#xff0c;stack \u5c31\u662f\u8f6c\u6362\u5934&#xff0c;\u5bf9\u5916\u53ea\u63d0\u4f9b\u6808\u7684\u63a5\u53e3\u3002<\/p>\n<h3>4. \u53ef\u66ff\u6362\u5e95\u5c42\u5bb9\u5668&#xff0c;\u5148\u770b\u5b83\u63d0\u4f9b\u4ec0\u4e48<\/h3>\n<hr \/>\n<h4>4.1 \u7b2c\u4e8c\u4e2a\u6a21\u677f\u53c2\u6570<\/h4>\n<p>\u6807\u51c6\u5e93\u6a21\u677f\u53c2\u6570\u7684\u57fa\u672c\u5f62\u72b6\u53ef\u4ee5\u7406\u89e3\u4e3a&#xff1a;<\/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\">T<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Container<\/span> <span class=\"token operator\">&#061;<\/span> std<span class=\"token double-colon punctuation\">::<\/span>deque<span class=\"token operator\">&lt;<\/span>T<span class=\"token operator\">&gt;&gt;<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">stack<\/span><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 punctuation\">,<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Container<\/span> <span class=\"token operator\">&#061;<\/span> std<span class=\"token double-colon punctuation\">::<\/span>deque<span class=\"token operator\">&lt;<\/span>T<span class=\"token operator\">&gt;&gt;<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">queue<\/span><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 punctuation\">,<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Container<\/span> <span class=\"token operator\">&#061;<\/span> std<span class=\"token double-colon punctuation\">::<\/span>vector<span class=\"token operator\">&lt;<\/span>T<span class=\"token operator\">&gt;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n         <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Compare<\/span> <span class=\"token operator\">&#061;<\/span> std<span class=\"token double-colon punctuation\">::<\/span>less<span class=\"token operator\">&lt;<\/span>T<span class=\"token operator\">&gt;&gt;<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">priority_queue<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>T \u51b3\u5b9a\u5143\u7d20\u7c7b\u578b&#xff0c;Container \u51b3\u5b9a\u5b58\u50a8\u5b83\u4eec\u7684\u5bb9\u5668\u7c7b\u578b\u3002\u8fd9\u91cc\u6a21\u677f\u7684\u7b2c\u4e8c\u53c2\u6570\u662f\u4e00\u4e2a\u5b8c\u6574\u7c7b\u578b&#xff0c;\u4f8b\u5982 std::deque&lt;int&gt;&#xff0c;\u6807\u51c6\u9002\u914d\u5668\u8981\u6c42 T \u4e0e\u5e95\u5c42\u5bb9\u5668\u7684\u5143\u7d20\u7c7b\u578b\u4e00\u81f4\u3002<\/p>\n<table>\n<tr>\u9002\u914d\u5668\u9ed8\u8ba4\u5e95\u5c42\u5bb9\u5668\u6838\u5fc3\u5e95\u5c42\u8981\u6c42\u53ef\u9009\u6807\u51c6\u5bb9\u5668\u4e3e\u4f8b<\/tr>\n<tbody>\n<tr>\n<td>stack<\/td>\n<td>deque&lt;T&gt;<\/td>\n<td>\u5c3e\u63d2\u3001\u5c3e\u5220\u3001\u5c3e\u90e8\u8bbf\u95ee&#xff0c;\u53e6\u6709\u6570\u91cf\u548c\u5224\u7a7a<\/td>\n<td>deque\u3001vector\u3001list<\/td>\n<\/tr>\n<tr>\n<td>queue<\/td>\n<td>deque&lt;T&gt;<\/td>\n<td>\u5c3e\u63d2\u3001\u5934\u5220\u3001\u5934\u5c3e\u8bbf\u95ee&#xff0c;\u53e6\u6709\u6570\u91cf\u548c\u5224\u7a7a<\/td>\n<td>deque\u3001list<\/td>\n<\/tr>\n<tr>\n<td>priority_queue<\/td>\n<td>vector&lt;T&gt;<\/td>\n<td>\u968f\u673a\u8bbf\u95ee\u8fed\u4ee3\u5668\u3001\u5c3e\u63d2\u5c3e\u5220\u3001\u9996\u5143\u7d20\u8bbf\u95ee\u7b49<\/td>\n<td>vector\u3001deque<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u5bf9\u4e8e queue \u6765\u8bf4&#xff0c;\u666e\u901a\u7684 vector \u6ca1\u6709 pop_front()&#xff0c;\u4e0d\u80fd\u76f4\u63a5\u627f\u62c5\u6807\u51c6 queue \u7684\u5934\u5220\u8981\u6c42\u3002\u5373\u4f7f\u53ef\u4ee5\u5199 erase(begin())&#xff0c;\u90a3\u4e5f\u4e0d\u662f queue \u8981\u8c03\u7528\u7684\u540c\u540d\u63a5\u53e3&#xff0c;\u800c\u4e14\u8fd9\u6837\u6bcf\u6b21\u5220\u9664\u5934\u90e8\u901a\u5e38\u8981\u540c\u6b65\u79fb\u52a8\u540e\u9762\u7684\u5143\u7d20&#xff0c;\u6548\u7387\u8f83\u4f4e\u3002<\/p>\n<p>list \u6ca1\u6709\u968f\u673a\u8bbf\u95ee\u8fed\u4ee3\u5668&#xff0c;\u6240\u4ee5\u5176\u4e0d\u80fd\u627f\u62c5\u6807\u51c6 priority_queue \u6240\u9700\u7684\u5806\u7b97\u6cd5\u63a5\u53e3\u3002\u8fd9\u4e24\u4e2a\u5bf9\u7167\u8bf4\u660e&#xff1a;\u5bb9\u5668\u66ff\u6362\u53d6\u51b3\u4e8e\u64cd\u4f5c\u5951\u7ea6&#xff0c;\u4e0d\u53d6\u51b3\u4e8e\u201c\u5b83\u4e5f\u80fd\u5b58\u653e\u6570\u636e\u201d\u3002<\/p>\n<h4>4.2 deque&#xff1a;\u903b\u8f91\u4e0a\u662f\u4e00\u5217&#xff0c;\u5178\u578b\u5b9e\u73b0\u4e2d\u5206\u6bb5\u5b58\u50a8<\/h4>\n<p>deque \u8bfb\u4f5c\u53cc\u7aef\u961f\u5217&#xff0c;\u53ef\u4ee5\u5728\u5934\u5c3e\u63d2\u5165\u3001\u5220\u9664&#xff0c;\u8fd8\u652f\u6301\u4e0b\u6807\u548c\u968f\u673a\u8bbf\u95ee\u8fed\u4ee3\u5668\u3002<\/p>\n<p>\u5178\u578b\u5b9e\u73b0\u7528\u4e00\u4e2a\u7d22\u5f15\u7ed3\u6784&#xff08;\u4e2d\u67a2\u6570\u7ec4&#xff09;\u7ba1\u7406\u591a\u4e2a\u7f13\u51b2\u5757\u3002\u6bcf\u5757\u5185\u90e8\u8fde\u7eed&#xff0c;\u4e0d\u540c\u5757\u4e0d\u4fdd\u8bc1\u7269\u7406\u76f8\u90bb\u3002\u7531\u6b64\u53ef\u4ee5\u63d0\u4f9b\u903b\u8f91\u4e0a\u7b2c 0\u30011\u30012\u2026\u2026\u4e2a\u5143\u7d20\u7684\u8bbf\u95ee&#xff0c;\u5374\u4e0d\u80fd\u5047\u8bbe\u6240\u6709\u5143\u7d20\u50cf\u4e00\u4e2a\u666e\u901a\u6570\u7ec4\u4e00\u6837\u4f4d\u4e8e\u6574\u5757\u8fde\u7eed\u7a7a\u95f4\u4e2d\u3002 <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/10\/20261007151808-6ac662b07e178.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<p>\u968f\u673a\u8bbf\u95ee\u4e3a\u4ec0\u4e48\u4ecd\u7136\u662f\u5e38\u6570\u65f6\u95f4&#xff1f;\u5176\u5e95\u5c42\u5b9e\u73b0\u53ef\u4ee5\u7528\u4f4d\u7f6e\u548c\u5757\u5927\u5c0f\u8ba1\u7b97\u76ee\u6807\u5757\u4e0e\u5757\u5185\u504f\u79fb&#xff0c;\u800c\u4e0d\u9700\u8981\u4ece\u5934\u9010\u4e2a\u8d70\u8fc7\u53bb\u3002\u8fed\u4ee3\u5668\u8de8\u5757\u65f6\u5219\u9700\u8981\u5904\u7406\u8fb9\u754c&#xff0c;\u6240\u4ee5\u5b83\u901a\u5e38\u6bd4\u4e00\u4e2a\u88f8\u6307\u9488\u66f4\u590d\u6742\u3002<\/p>\n<h4>4.3 \u4e3a\u4ec0\u4e48\u9ed8\u8ba4\u9009 deque<\/h4>\n<p>stack \u53ea\u7528\u5c3e\u90e8\u64cd\u4f5c&#xff0c;queue \u540c\u65f6\u7528\u5934\u5c3e\u64cd\u4f5c&#xff0c;deque \u90fd\u80fd\u591f\u76f4\u63a5\u652f\u6301\u3002<\/p>\n<p>deque\u53cc\u5411\u961f\u5217\u5929\u7136\u9ad8\u6548\u652f\u6301\u5934\u5c3e O (1) \u589e\u5220&#xff0c;\u6240\u4ee5\u4f5c\u4e3a\u901a\u7528\u9ed8\u8ba4\u5e95\u5c42\u5bb9\u5668\u3002<\/p>\n<p>\u8fd9\u8ba9\u5b83\u6210\u4e3a\u5408\u7406\u7684\u901a\u7528\u9ed8\u8ba4\u9009\u62e9\u3002\u4f46\u8981\u8865\u4e0a\u51e0\u6761\u8fb9\u754c&#xff1a;<\/p>\n<ul>\n<li>\u987a\u5e8f\u8fde\u7eed\u5b58\u50a8\u5728\u7f13\u5b58\u5c40\u90e8\u6027\u3001\u7b80\u5355\u904d\u5386\u548c\u9884\u5148\u89c4\u5212\u5bb9\u91cf\u7b49\u65b9\u9762\u53ef\u80fd\u66f4\u6709\u4f18\u52bf&#xff1b;\u4e0d\u80fd\u65ad\u8a00 deque \u505a\u6808\u6c38\u8fdc\u66f4\u5feb\u3002<\/li>\n<li>\u5206\u5757\u7a7a\u95f4\u4ecd\u6709\u672a\u7528\u69fd\u4f4d\u548c\u7d22\u5f15\u7ba1\u7406\u6210\u672c&#xff0c;\u4e0d\u80fd\u8bf4\u6ca1\u6709\u989d\u5916\u5f00\u9500&#xff0c;\u7a7a\u95f4\u5229\u7528\u7387\u4e5f\u4e0d\u80fd\u8131\u79bb\u5143\u7d20\u5927\u5c0f\u4e0e\u6570\u91cf\u6765\u6bd4\u8f83\u3002<\/li>\n<li>deque \u53ef\u4ee5\u904d\u5386&#xff0c;\u590d\u6742\u5ea6\u4ecd\u662f\u7ebf\u6027\u7684\u3002\u8de8\u5757\u68c0\u67e5\u548c\u5c40\u90e8\u6027\u662f\u4ee3\u4ef7&#xff0c;\u4f46\u4e0d\u81f3\u4e8e\u8bf4\u201c\u4e0d\u9002\u5408\u904d\u5386\u201d\u6216\u201c\u81f4\u547d\u7f3a\u9677\u201d\u3002<\/li>\n<\/ul>\n<h3>5. \u4e24\u4e2a\u9002\u914d\u5668\u7684\u7b80\u77ed\u5b9e\u73b0<\/h3>\n<hr \/>\n<h4>5.1 \u6808&#xff1a;\u628a\u5c3e\u90e8\u5f53\u4f5c\u552f\u4e00\u5165\u53e3\u548c\u51fa\u53e3<\/h4>\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 macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;deque&gt;<\/span><\/span><\/p>\n<p><span class=\"token keyword\">namespace<\/span> by<br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token comment\">\/\/Container\u9002\u914d\u8f6c\u6362stack<\/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 punctuation\">,<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Container<\/span> <span class=\"token operator\">&#061;<\/span> std<span class=\"token double-colon punctuation\">::<\/span>deque<span class=\"token operator\">&lt;<\/span>T<span class=\"token operator\">&gt;&gt;<\/span><br \/>\n<span class=\"token keyword\">class<\/span> <span class=\"token class-name\">stack<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">public<\/span><span class=\"token operator\">:<\/span><br \/>\n<span class=\"token comment\">\/\/\u7531\u4e8e\u6210\u5458\u53d8\u91cf\u662f\u5bf9\u5e94\u7684\u5bb9\u5668&#xff0c;\u6240\u4ee5\u6b64\u5904\u4e0d\u9700\u8981\u5355\u72ec\u5199\u6784\u9020\u51fd\u6570<\/span><br \/>\n<span class=\"token comment\">\/\/\u53ea\u9700\u8981\u5b9e\u73b0\u6838\u5fc3\u529f\u80fd\u5373\u53ef<\/span><\/p>\n<p><span class=\"token comment\">\/\/\u5165\u6808&#xff08;\u7edf\u4e00\u628a\u5bb9\u5668\u7684\u5c3e\u90e8\u5f53\u6808\u9876&#xff09;<\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">push<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> T<span class=\"token operator\">&amp;<\/span> x<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n_con<span class=\"token punctuation\">.<\/span><span class=\"token function\">push_back<\/span><span class=\"token punctuation\">(<\/span>x<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/\u51fa\u6808 <\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">pop<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n_con<span class=\"token punctuation\">.<\/span><span class=\"token function\">pop_back<\/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 comment\">\/\/\u83b7\u53d6\u6808\u9876\u5143\u7d20<\/span><br \/>\n<span class=\"token keyword\">const<\/span> T<span class=\"token operator\">&amp;<\/span> <span class=\"token function\">top<\/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> _con<span class=\"token punctuation\">.<\/span><span class=\"token function\">back<\/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 comment\">\/\/\u83b7\u53d6\u5f53\u524d\u6570\u636e\u4e2a\u6570<\/span><br \/>\nsize_t <span class=\"token function\">size<\/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> _con<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><\/p>\n<p><span class=\"token comment\">\/\/\u5224\u65ad\u5f53\u524d\u662f\u5426\u4e3a\u7a7a<\/span><br \/>\n<span class=\"token keyword\">bool<\/span> <span class=\"token function\">empty<\/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> _con<span class=\"token punctuation\">.<\/span><span class=\"token function\">empty<\/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\">private<\/span><span class=\"token operator\">:<\/span><br \/>\nContainer _con<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>\u82e5\u5199 by::stack&lt;int&gt;&#xff0c;Container \u88ab\u66ff\u6362\u4e3a std::deque&lt;int&gt;&#xff1b;\u82e5\u5199 by::stack&lt;int, std::vector&lt;int&gt;&gt;&#xff0c;\u6210\u5458\u5bb9\u5668\u5c31\u53d8\u6210 std::vector&lt;int&gt;\u3002\u51fd\u6570\u4f53\u5185\u7684\u89c4\u5219\u5e76\u6ca1\u6709\u53d8\u5316\u3002<\/p>\n<h4>5.2 \u961f\u5217&#xff1a;\u53ea\u628a\u5220\u9664\u64cd\u4f5c\u6362\u5230\u5934\u90e8<\/h4>\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><\/p>\n<p><span class=\"token keyword\">namespace<\/span> by<br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token comment\">\/\/Container\u9002\u914d\u8f6c\u6362queue<\/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 punctuation\">,<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Container<\/span> <span class=\"token operator\">&#061;<\/span> std<span class=\"token double-colon punctuation\">::<\/span>deque<span class=\"token operator\">&lt;<\/span>T<span class=\"token operator\">&gt;&gt;<\/span><br \/>\n<span class=\"token keyword\">class<\/span> <span class=\"token class-name\">queue<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">public<\/span><span class=\"token operator\">:<\/span><\/p>\n<p><span class=\"token comment\">\/\/\u961f\u5c3e\u63d2\u5165\u5143\u7d20<\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">push<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> T<span class=\"token operator\">&amp;<\/span> x<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n_con<span class=\"token punctuation\">.<\/span><span class=\"token function\">push_back<\/span><span class=\"token punctuation\">(<\/span>x<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/\u961f\u5934\u51fa\u5143\u7d20<\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">pop<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n_con<span class=\"token punctuation\">.<\/span><span class=\"token function\">pop_front<\/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 comment\">\/\/\u83b7\u53d6\u961f\u5934\u5143\u7d20<\/span><br \/>\n<span class=\"token keyword\">const<\/span> T<span class=\"token operator\">&amp;<\/span> <span class=\"token function\">front<\/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> _con<span class=\"token punctuation\">.<\/span><span class=\"token function\">front<\/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 comment\">\/\/\u83b7\u53d6\u961f\u5c3e\u5143\u7d20<\/span><br \/>\n<span class=\"token keyword\">const<\/span> T<span class=\"token operator\">&amp;<\/span> <span class=\"token function\">back<\/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> _con<span class=\"token punctuation\">.<\/span><span class=\"token function\">back<\/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 comment\">\/\/\u83b7\u53d6\u5f53\u524d\u5143\u7d20\u4e2a\u6570<\/span><br \/>\nsize_t <span class=\"token function\">size<\/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> _con<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><\/p>\n<p><span class=\"token comment\">\/\/\u5224\u65ad\u5f53\u524d\u662f\u5426\u4e3a\u7a7a<\/span><br \/>\n<span class=\"token keyword\">bool<\/span> <span class=\"token function\">empty<\/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> _con<span class=\"token punctuation\">.<\/span><span class=\"token function\">empty<\/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\">private<\/span><span class=\"token operator\">:<\/span><br \/>\nContainer _con<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>\u5b83\u4e0e\u6808\u7684\u5171\u540c\u70b9\u662f\u90fd\u628a\u5b58\u50a8\u8d23\u4efb\u59d4\u6258\u7ed9\u4e86\u6210\u5458\u5bf9\u8c61\u3002\u533a\u522b\u53ea\u6709&#xff1a;\u5165\u961f\u4ece\u5c3e\u90e8\u8fdb\u5165&#xff0c;\u51fa\u961f\u4ece\u5934\u90e8\u79bb\u5f00\u3002<\/p>\n<h4>5.3 \u4e3a\u4ec0\u4e48\u6ca1\u6709\u518d\u6b21\u624b\u5199\u6790\u6784\u3001\u6df1\u62f7\u8d1d\u4e0e\u8d4b\u503c<\/h4>\n<ul>\n<li>\u6784\u9020&#xff1a;\u521b\u5efa\u9002\u914d\u5668\u5bf9\u8c61\u65f6&#xff0c;\u6210\u5458\u5bb9\u5668\u4f1a\u81ea\u52a8\u8c03\u7528\u5e95\u5c42\u5bb9\u5668\u7684\u9ed8\u8ba4\u6784\u9020\u51fd\u6570\u3002<\/li>\n<li>\u6790\u6784&#xff1a;\u9002\u914d\u5668\u9500\u6bc1\u65f6&#xff0c;\u6210\u5458\u5bf9\u8c61\u4f1a\u81ea\u52a8\u8c03\u7528\u5b83\u81ea\u5df1\u7684\u6790\u6784\u51fd\u6570&#xff0c;\u91ca\u653e\u5bb9\u5668\u5185\u90e8\u8d44\u6e90\u3002\u4e0d\u9700\u8981\u624b\u5199\u6790\u6784\u51fd\u6570\u3002<\/li>\n<li>\u62f7\u8d1d\u6784\u9020 \/ \u62f7\u8d1d\u8d4b\u503c&#xff1a;\u7f16\u8bd1\u5668\u5408\u6210\u7684\u9ed8\u8ba4\u62f7\u8d1d\u3001\u8d4b\u503c\u8fd0\u7b97\u7b26&#xff0c;\u4f1a\u5bf9\u6210\u5458\u505a\u9010\u6210\u5458\u62f7\u8d1d&#xff0c;\u76f4\u63a5\u8c03\u7528\u5e95\u5c42\u5bb9\u5668\u81ea\u5df1\u7684\u62f7\u8d1d\u6784\u9020\u3001\u62f7\u8d1d\u8d4b\u503c&#xff0c;\u5b8c\u6210\u6df1\u62f7\u8d1d\u3002<\/li>\n<\/ul>\n<h3>6. priority_queue&#xff1a;\u6bcf\u6b21\u7ed9\u51fa\u5f53\u524d\u6700\u9ad8\u4f18\u5148\u7ea7<\/h3>\n<hr \/>\n<h4>6.1 \u9ed8\u8ba4\u5927\u5806\u4e0e\u5c0f\u5806\u7684\u7528\u6cd5<\/h4>\n<p>\u4f18\u5148\u7ea7\u961f\u5217\u4e0d\u662f\u666e\u901a\u5148\u8fdb\u5148\u51fa\u961f\u5217&#xff0c;\u8bbf\u95ee\u51fd\u6570\u662f top()&#xff0c;\u6ca1\u6709 front()\/back()&#xff1b;\u5220\u9664\u7684\u662f\u5f53\u524d\u6700\u9ad8\u4f18\u5148\u7ea7\u5143\u7d20\u3002<\/p>\n<p>\u4e0b\u9762\u7528\u4e00\u4e2a\u7b80\u5355\u7684\u5c0f\u7a0b\u5e8f&#xff0c;\u540c\u65f6\u89c2\u5bdf\u5927\u5806\u4e0e\u5c0f\u5806\u7684\u8f93\u51fa\u987a\u5e8f\u3002<\/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\">&lt;functional&gt;<\/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\">&lt;iostream&gt;<\/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\">&lt;queue&gt;<\/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\">&lt;vector&gt;<\/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 \/>\n    <span class=\"token keyword\">int<\/span> values<span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">3<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">5<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">4<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">6<\/span> <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token comment\">\/\/\u9ed8\u8ba4\u7b2c\u4e8c\u6a21\u677f\u53c2\u6570less \u5347\u5e8f\u5efa\u5c0f\u5806<\/span><br \/>\n    std<span class=\"token double-colon punctuation\">::<\/span>priority_queue<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span><span class=\"token operator\">&gt;<\/span> large<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token comment\">\/\/\u663e\u5f0f\u7ed9greater \u964d\u5e8f\u5efa\u5927\u5806<\/span><br \/>\n    std<span class=\"token double-colon punctuation\">::<\/span>priority_queue<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span><span class=\"token punctuation\">,<\/span> std<span class=\"token double-colon punctuation\">::<\/span>vector<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span><span class=\"token operator\">&gt;<\/span><span class=\"token punctuation\">,<\/span> std<span class=\"token double-colon punctuation\">::<\/span>greater<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span><span class=\"token operator\">&gt;&gt;<\/span> small<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token comment\">\/\/\u5404\u81ea\u5165\u961f\u5217<\/span><br \/>\n    <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> value <span class=\"token operator\">:<\/span> values<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        large<span class=\"token punctuation\">.<\/span><span class=\"token function\">push<\/span><span class=\"token punctuation\">(<\/span>value<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        small<span class=\"token punctuation\">.<\/span><span class=\"token function\">push<\/span><span class=\"token punctuation\">(<\/span>value<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/\u8f93\u51fa\u964d\u5e8f\u5efa\u5927\u5806\u7684\u987a\u5e8f<\/span><br \/>\n    std<span class=\"token double-colon punctuation\">::<\/span>cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;\u964d\u5e8f\u5efa\u5927\u5806-&gt;&#034;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span>large<span class=\"token punctuation\">.<\/span><span class=\"token function\">empty<\/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        std<span class=\"token double-colon punctuation\">::<\/span>cout <span class=\"token operator\">&lt;&lt;<\/span> large<span class=\"token punctuation\">.<\/span><span class=\"token function\">top<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token punctuation\">(<\/span>large<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\">&#061;&#061;<\/span> <span class=\"token number\">1<\/span> <span class=\"token operator\">?<\/span> <span class=\"token char\">&#039;\\\\n&#039;<\/span> <span class=\"token operator\">:<\/span> <span class=\"token char\">&#039; &#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        large<span class=\"token punctuation\">.<\/span><span class=\"token function\">pop<\/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    std<span class=\"token double-colon punctuation\">::<\/span>cout <span class=\"token operator\">&lt;&lt;<\/span> std<span class=\"token double-colon punctuation\">::<\/span>endl<span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/\/\/\u8f93\u51fa\u5347\u5e8f\u5efa\u5c0f\u5806\u7684\u987a\u5e8f<\/span><br \/>\n    std<span class=\"token double-colon punctuation\">::<\/span>cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;\u5347\u5e8f\u5efa\u5c0f\u5806-&gt;&#034;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span>small<span class=\"token punctuation\">.<\/span><span class=\"token function\">empty<\/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        std<span class=\"token double-colon punctuation\">::<\/span>cout <span class=\"token operator\">&lt;&lt;<\/span> small<span class=\"token punctuation\">.<\/span><span class=\"token function\">top<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token punctuation\">(<\/span>small<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\">&#061;&#061;<\/span> <span class=\"token number\">1<\/span> <span class=\"token operator\">?<\/span> <span class=\"token char\">&#039;\\\\n&#039;<\/span> <span class=\"token operator\">:<\/span> <span class=\"token char\">&#039; &#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        small<span class=\"token punctuation\">.<\/span><span class=\"token function\">pop<\/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    std<span class=\"token double-colon punctuation\">::<\/span>cout <span class=\"token operator\">&lt;&lt;<\/span> std<span class=\"token double-colon punctuation\">::<\/span>endl<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<p>\u8fd0\u884c\u793a\u4f8b&#xff1a; <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/10\/20261007151809-6ac662b145ede.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> \u6ce8\u610f\u8fd9\u91cc\u7684\u201c\u964d\u5e8f\u51cf\u5927\u5806&#xff0c;\u5347\u5e8f\u5efa\u5c0f\u5806\u201d\u9700\u8981\u4e0e\u5806\u6392\u5e8f\u7684\u8f93\u51fa\u7ed3\u679c\u52a0\u4ee5\u533a\u5206&#xff1a;<\/p>\n<ul>\n<li>\u5728\u5806\u6392\u5e8f\u4e2d&#xff0c;\u5c0f\u5806\u5806\u9876\u6700\u5c0f&#xff0c;\u6700\u5148\u4e0e\u5c3e\u90e8\u5143\u7d20\u4ea4\u6362&#xff0c;\u4ea4\u6362\u540e\u6574\u4f53 size \u51cf 1 &#xff0c;\u6240\u4ee5\u6700\u5c0f\u5143\u7d20\u4f9d\u6b21\u4ece\u6570\u7ec4\u5c3e\u90e8\u5f80\u524d\u6392\u5217&#xff0c;\u6700\u7ec8\u5f62\u6210\u7684\u6548\u679c\u5c31\u662f\u964d\u5e8f\u3002<\/li>\n<li>\u5728\u6b64\u5904\u4f18\u5148\u7ea7\u961f\u5217\u4e2d\u5219\u521a\u597d\u76f8\u53cd&#xff0c;\u5c0f\u5806\u5806\u9876\u6700\u5c0f&#xff0c;\u662f\u6700\u5148\u88ab\u8f93\u51fa\u7684\u5143\u7d20&#xff0c;\u7136\u540e\u518d\u4f9d\u6b21\u662f\u5269\u4f59\u6700\u5c0f\u5143\u7d20\u7684\u8f93\u51fa&#xff0c;\u6700\u7ec8\u5f62\u6210\u7684\u6548\u679c\u5c31\u662f\u5347\u5e8f\u3002&#xff08;\u5927\u5806\u540c\u7406&#xff09;<\/li>\n<\/ul>\n<h4>6.2 \u7528\u6570\u7ec4\u8868\u793a\u6811&#xff0c;\u4e0d\u7b49\u4e8e\u628a\u6570\u7ec4\u6392\u597d\u5e8f<\/h4>\n<p>\u8fd9\u91cc\u7684\u5806\u662f\u4e00\u79cd\u6570\u636e\u7ed3\u6784&#xff0c;\u4e0e new \u7533\u8bf7\u7a7a\u95f4\u65f6\u6240\u8bf4\u7684\u5185\u5b58\u201c\u5806\u533a\u201d\u4e0d\u662f\u540c\u4e00\u4e2a\u6982\u5ff5\u3002<\/p>\n<p>\u5177\u4f53\u7ec6\u8282\u53ef\u67e5\u770b&#xff1a;\u4ece\u6811\u7684\u5c42\u6b21\u5173\u7cfb\u5230\u5806\u7684\u8c03\u6574\u7b97\u6cd5&#xff1a;\u4e8c\u53c9\u6811\u5f00\u7bc7<\/p>\n<p>\u5806\u53ef\u4ee5\u7528\u6570\u7ec4\u6309\u5c42\u5e8f\u8868\u793a\u6210\u4e00\u68f5\u5b8c\u5168\u4e8c\u53c9\u6811\u3002\u4e0b\u6807\u4ece 0 \u5f00\u59cb\u65f6&#xff1a;<\/p>\n<table>\n<tr>\u4f4d\u7f6e\u4e0b\u6807\u5173\u7cfb<\/tr>\n<tbody>\n<tr>\n<td>\u5de6\u5b69\u5b50<\/td>\n<td>2 * parent &#043; 1<\/td>\n<\/tr>\n<tr>\n<td>\u53f3\u5b69\u5b50<\/td>\n<td>2 * parent &#043; 2<\/td>\n<\/tr>\n<tr>\n<td>\u975e\u6839\u8282\u70b9\u7684\u7236\u4eb2<\/td>\n<td>(child &#8211; 1) \/ 2&#xff0c;\u524d\u63d0\u662f child &gt; 0<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/10\/20261007151809-6ac662b150001.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<p>\u56fe\u4e2d\u6570\u7ec4 9 7 8 1 3 2 6 \u662f\u4e00\u4e2a\u5927\u5806&#xff1a;\u6bcf\u4e2a\u7236\u8282\u70b9\u90fd\u4e0d\u5c0f\u4e8e\u5b69\u5b50\u3002<\/p>\n<p>\u4f46\u6ce8\u610f\u6b64\u65f6\u6570\u7ec4\u5e76\u4e0d\u662f\u5b8c\u5168\u964d\u5e8f&#xff0c;\u5806\u53ea\u7ef4\u62a4\u7236\u5b50\u5173\u7cfb&#xff0c;\u5c31\u8db3\u4ee5\u4fdd\u8bc1\u6839\u8282\u70b9\u662f\u5f53\u524d\u6700\u5927\u503c\u6216\u6700\u5c0f\u503c\u3002\u8bbf\u95ee\u5806\u9876\u4e0d\u9700\u8981\u518d\u626b\u63cf\u6240\u6709\u5143\u7d20\u3002\u5144\u5f1f\u8282\u70b9\u4e4b\u95f4\u6ca1\u6709\u5fc5\u987b\u6709\u5e8f\u7684\u7ea6\u675f<\/p>\n<h3>7. \u6bd4\u8f83\u5668\u4e0e\u5806\u8c03\u6574&#xff1a;\u89c4\u5219\u5982\u4f55\u53d8\u6210\u7b97\u6cd5<\/h3>\n<hr \/>\n<h4>7.1 less \u4e3a\u4ec0\u4e48\u5bf9\u5e94\u5927\u5806<\/h4>\n<p>std::less&lt;int&gt; \u8c03\u7528 a &lt; b&#xff0c;std::greater&lt;int&gt; \u8c03\u7528 a &gt; b\u3002\u5b83\u4eec\u662f\u53ef\u4ee5\u50cf\u51fd\u6570\u4e00\u6837\u8c03\u7528\u7684\u5bf9\u8c61&#xff0c;\u4e5f\u53eb\u51fd\u6570\u5bf9\u8c61\u6216\u4eff\u51fd\u6570&#xff0c;\u6838\u5fc3\u662f\u91cd\u8f7d operator()\u3002<\/p>\n<p>\u5728\u4f18\u5148\u7ea7\u961f\u5217\u4e2d&#xff0c;\u6bd4\u8f83\u5668\u8868\u8fbe\u7684\u662f\u6392\u5e8f\u5173\u7cfb&#xff1a;compare(a, b) \u4e3a\u771f&#xff0c;\u8868\u793a a \u5728\u8be5\u5173\u7cfb\u4e2d\u4f4d\u4e8e b \u524d\u9762\u3002\u4f18\u5148\u7ea7\u961f\u5217\u5374\u628a\u8fd9\u4e2a\u5173\u7cfb\u4e2d\u201c\u9760\u540e\u201d\u7684\u5143\u7d20\u653e\u5230\u5806\u9876\u3002\u56e0\u6b64\u9ed8\u8ba4 &lt; \u5173\u7cfb\u4e0b&#xff0c;\u66f4\u5927\u7684\u5143\u7d20\u5728\u5806\u9876\u3002<\/p>\n<table>\n<tr>\u6bd4\u8f83\u5668compare(parent, child)\u4e3a\u771f\u65f6\u7684\u542b\u4e49\u6700\u7ec8\u5806\u9876<\/tr>\n<tbody>\n<tr>\n<td>less&lt;int&gt;<\/td>\n<td>parent &lt; child<\/td>\n<td>\u5b69\u5b50\u66f4\u5927&#xff0c;\u5e94\u5411\u4e0a<\/td>\n<td>\u6700\u5927\u503c<\/td>\n<\/tr>\n<tr>\n<td>greater&lt;int&gt;<\/td>\n<td>parent &gt; child<\/td>\n<td>\u5b69\u5b50\u66f4\u5c0f&#xff0c;\u5e94\u5411\u4e0a<\/td>\n<td>\u6700\u5c0f\u503c<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/10\/20261007151810-6ac662b24b8eb.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h4>7.2 \u63d2\u5165&#xff1a;\u65b0\u5143\u7d20\u53ea\u53ef\u80fd\u7834\u574f\u7956\u5148\u8def\u5f84<\/h4>\n<p>\u539f\u6765\u7684\u6570\u7ec4\u5df2\u7ecf\u6ee1\u8db3\u5806\u5173\u7cfb&#xff0c;\u5c3e\u90e8\u52a0\u5165\u65b0\u5143\u7d20\u540e&#xff0c;\u5b8c\u5168\u4e8c\u53c9\u6811\u7684\u5f62\u72b6\u4ecd\u6210\u7acb\u3002\u65b0\u5143\u7d20\u6ca1\u6709\u5b69\u5b50&#xff0c;\u552f\u4e00\u53ef\u80fd\u51fa\u9519\u7684\u662f\u5b83\u4e0e\u7236\u8282\u70b9\u7684\u5173\u7cfb\u3002\u4e8e\u662f\u5148\u6bd4\u8f83\u7236\u5b50&#xff0c;\u5fc5\u8981\u65f6\u4ea4\u6362&#xff0c;\u518d\u6cbf\u7956\u5148\u94fe\u7ee7\u7eed\u3002 <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/10\/20261007151810-6ac662b2e7e8e.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> \u6a21\u62df\u4ece 9 7 8 1 3 2 6 \u8ffd\u52a0 10&#xff1a;<\/p>\n<table>\n<tr>\u6b65\u9aa4childparent\u5224\u65ad\u4e0e\u7ed3\u679c<\/tr>\n<tbody>\n<tr>\n<td>\u8ffd\u52a0\u540e<\/td>\n<td>7<\/td>\n<td>3<\/td>\n<td>1 &lt; 10&#xff0c;\u4ea4\u6362<\/td>\n<\/tr>\n<tr>\n<td>\u4e0a\u79fb\u4e00\u5c42<\/td>\n<td>3<\/td>\n<td>1<\/td>\n<td>7 &lt; 10&#xff0c;\u4ea4\u6362<\/td>\n<\/tr>\n<tr>\n<td>\u518d\u4e0a\u4e00\u5c42<\/td>\n<td>1<\/td>\n<td>0<\/td>\n<td>9 &lt; 10&#xff0c;\u4ea4\u6362<\/td>\n<\/tr>\n<tr>\n<td>\u5230\u6839<\/td>\n<td>0<\/td>\n<td>\u4e0d\u8ba1\u7b97<\/td>\n<td>\u6ca1\u6709\u7236\u4eb2&#xff0c;\u7ed3\u675f<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u6700\u540e\u6570\u7ec4\u4e3a 10 9 8 7 3 2 6 1\u3002\u4e0d\u662f\u6bcf\u6b21\u90fd\u8d70\u5230\u6839&#xff1b;\u82e5\u7236\u5b50\u5173\u7cfb\u5df2\u7ecf\u6210\u7acb&#xff0c;\u7acb\u5373\u505c\u6b62\u3002<\/p>\n<p><span class=\"token comment\">\/\/\u5411\u4e0a\u8c03\u6574\u7b97\u6cd5<\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">Adjust<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> child<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\nCompare com<span class=\"token punctuation\">;<\/span><br \/>\nsize_t parent <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">(<\/span>child <span class=\"token operator\">&#8211;<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">\/<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span>child <span class=\"token operator\">&gt;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token comment\">\/\/ if (_con[child] &gt; _con[parent])<\/span><br \/>\n<span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token function\">com<\/span><span class=\"token punctuation\">(<\/span>_con<span class=\"token punctuation\">[<\/span>parent<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span> _con<span class=\"token punctuation\">[<\/span>child<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\nstd<span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">swap<\/span><span class=\"token punctuation\">(<\/span>_con<span class=\"token punctuation\">[<\/span>child<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span> _con<span class=\"token punctuation\">[<\/span>parent<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\nchild <span class=\"token operator\">&#061;<\/span> parent<span class=\"token punctuation\">;<\/span><br \/>\nparent <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">(<\/span>child <span class=\"token operator\">&#8211;<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">\/<\/span> <span class=\"token number\">2<\/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 \/>\n<span class=\"token keyword\">break<\/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><\/p>\n<h4>7.3 \u5220\u9664&#xff1a;\u5148\u7528\u672b\u5c3e\u5143\u7d20\u586b\u6839&#xff0c;\u518d\u5411\u4e0b\u8c03\u6574<\/h4>\n<p>\u5982\u679c\u76f4\u63a5\u5220\u9664\u6570\u7ec4\u7b2c\u4e00\u4e2a\u4f4d\u7f6e\u5e76\u628a\u6240\u6709\u5143\u7d20\u524d\u79fb&#xff0c;\u6811\u4e2d\u7684\u7236\u5b50\u5173\u7cfb\u4f1a\u5927\u9762\u79ef\u6539\u53d8&#xff0c;\u8fd8\u8981\u642c\u79fb\u5143\u7d20\u3002\u6240\u4ee5\u5806\u5220\u9664\u4f7f\u7528\u53e6\u4e00\u6761\u8def\u7ebf&#xff1a;<\/p>\n<li>\u4ea4\u6362\u6839\u4e0e\u6700\u540e\u4e00\u4e2a\u5143\u7d20\u3002<\/li>\n<li>\u5220\u9664\u672b\u5c3e&#xff0c;\u771f\u6b63\u79fb\u9664\u65e7\u6839&#xff0c;\u540c\u65f6\u4fdd\u6301\u5b8c\u5168\u4e8c\u53c9\u6811\u5f62\u72b6\u3002<\/li>\n<li>\u65b0\u6839\u4e0e\u5b69\u5b50\u53ef\u80fd\u4e0d\u7b26\u5408\u89c4\u5219&#xff0c;\u6cbf\u7740\u5b69\u5b50\u8def\u5f84\u5411\u4e0b\u4fee\u590d\u3002<\/li>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/10\/20261007151811-6ac662b39572c.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> \u6a21\u62df\u4ece 9 7 8 1 3 2 6 \u5220\u9664 9&#xff1a;<\/p>\n<table>\n<tr>\u6b65\u9aa4childparent\u5224\u65ad\u4e0e\u7ed3\u679c<\/tr>\n<tbody>\n<tr>\n<td>\u539f\u5927\u5806<\/td>\n<td>\u4e0d\u8ba1\u7b97<\/td>\n<td>\u4e0d\u8ba1\u7b97<\/td>\n<td>\u6839 9 \u4e0e\u672b\u5c3e 6 \u4ea4\u6362<\/td>\n<\/tr>\n<tr>\n<td>\u4ea4\u6362\u5b8c\u6210<\/td>\n<td>\u4e0d\u8ba1\u7b97<\/td>\n<td>\u4e0d\u8ba1\u7b97<\/td>\n<td>\u5220\u9664\u672b\u5c3e\u7684\u65e7\u6839 9&#xff0c;\u5f97\u5230 6 7 8 1 3 2<\/td>\n<\/tr>\n<tr>\n<td>\u5f62\u72b6\u4fdd\u6301\u5b8c\u6574<\/td>\n<td>2<\/td>\n<td>0<\/td>\n<td>\u9009\u8f83\u5927\u5b69\u5b50 8&#xff1b;6 &lt; 8&#xff0c;\u4ea4\u6362&#xff0c;\u5f97\u5230 8 7 6 1 3 2<\/td>\n<\/tr>\n<tr>\n<td>\u68c0\u67e5\u4e0b\u4e00\u5c42<\/td>\n<td>5<\/td>\n<td>2<\/td>\n<td>\u53ea\u6709\u5b69\u5b50 2&#xff1b;6 \u2265 2&#xff0c;\u505c\u6b62<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u4e3a\u4ec0\u4e48\u5148\u9009\u66f4\u5927\u7684\u5b69\u5b50&#xff1f; \u82e5\u8bef\u9009 7 \u4ea4\u6362&#xff0c;\u6839\u53d8\u6210 7&#xff0c;\u5374\u4ecd\u6bd4\u53f3\u5b69\u5b50 8 \u5c0f&#xff0c;\u6839\u7684\u5173\u7cfb\u5c31\u6ca1\u6709\u4fee\u597d\u3002\u5bf9\u5c0f\u5806\u76f8\u53cd&#xff0c;\u8981\u5148\u9009\u66f4\u5c0f\u7684\u5b69\u5b50\u3002<\/p>\n<p><span class=\"token comment\">\/\/\u5411\u4e0b\u8c03\u6574\u7b97\u6cd5<\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">AdjustDown<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> parent<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\nCompare com<span class=\"token punctuation\">;<\/span><br \/>\nsize_t child <span class=\"token operator\">&#061;<\/span> parent <span class=\"token operator\">*<\/span> <span class=\"token number\">2<\/span> <span class=\"token operator\">&#043;<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span>child <span class=\"token operator\">&lt;<\/span> _con<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 comment\">\/\/if (child &#043; 1 &lt; _con.size() &amp;&amp; _con[child] &lt; _con[child &#043; 1])<\/span><br \/>\n<span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>child <span class=\"token operator\">&#043;<\/span> <span class=\"token number\">1<\/span> <span class=\"token operator\">&lt;<\/span> _con<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\">&amp;&amp;<\/span> <span class=\"token function\">com<\/span><span class=\"token punctuation\">(<\/span>_con<span class=\"token punctuation\">[<\/span>child<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span> _con<span class=\"token punctuation\">[<\/span>child <span class=\"token operator\">&#043;<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\nchild<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/if (_con[parent] &lt; _con[child])<\/span><br \/>\n<span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token function\">com<\/span><span class=\"token punctuation\">(<\/span>_con<span class=\"token punctuation\">[<\/span>parent<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span> _con<span class=\"token punctuation\">[<\/span>child<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\nstd<span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">swap<\/span><span class=\"token punctuation\">(<\/span>_con<span class=\"token punctuation\">[<\/span>parent<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span> _con<span class=\"token punctuation\">[<\/span>child<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\nparent <span class=\"token operator\">&#061;<\/span> child<span class=\"token punctuation\">;<\/span><br \/>\nchild <span class=\"token operator\">&#061;<\/span> parent <span class=\"token operator\">*<\/span> <span class=\"token number\">2<\/span> <span class=\"token operator\">&#043;<\/span> <span class=\"token number\">1<\/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 \/>\n<span class=\"token keyword\">break<\/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><\/p>\n<h4>7.4 \u628a\u5b58\u50a8\u3001\u6bd4\u8f83\u548c\u8c03\u6574\u7ec4\u5408\u8d77\u6765<\/h4>\n<p><span class=\"token comment\">\/\/\u63d2\u5165\u6570\u636e<\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">push<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> T<span class=\"token operator\">&amp;<\/span> x<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n_con<span class=\"token punctuation\">.<\/span><span class=\"token function\">push_back<\/span><span class=\"token punctuation\">(<\/span>x<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token function\">Adjust<\/span><span class=\"token punctuation\">(<\/span>_con<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\">&#8211;<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/\u5220\u9664\u6570\u636e<\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">pop<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\nstd<span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">swap<\/span><span class=\"token punctuation\">(<\/span>_con<span class=\"token punctuation\">[<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span> _con<span class=\"token punctuation\">[<\/span>_con<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\">&#8211;<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n_con<span class=\"token punctuation\">.<\/span><span class=\"token function\">pop_back<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token function\">AdjustDown<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">0<\/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\">const<\/span> T<span class=\"token operator\">&amp;<\/span> <span class=\"token function\">top<\/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> _con<span class=\"token punctuation\">[<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/\u83b7\u53d6\u5f53\u524d\u5143\u7d20\u4e2a\u6570<\/span><br \/>\nsize_t <span class=\"token function\">size<\/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> _con<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><\/p>\n<p><span class=\"token comment\">\/\/\u5224\u65ad\u5f53\u524d\u662f\u5426\u4e3a\u7a7a<\/span><br \/>\n<span class=\"token keyword\">bool<\/span> <span class=\"token function\">empty<\/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> _con<span class=\"token punctuation\">.<\/span><span class=\"token function\">empty<\/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>\u5355\u5143\u7d20\u5220\u9664\u65f6&#xff0c;\u6839\u4e0e\u672b\u5c3e\u662f\u540c\u4e00\u4e2a\u5143\u7d20\u3002\u5220\u9664\u540e\u5bb9\u5668\u4e3a\u7a7a&#xff0c;\u5c31\u4e0d\u518d\u5411\u4e0b\u8c03\u6574\u3002<\/p>\n<p>\u4e0e\u6808\u3001\u961f\u5217\u76f8\u6bd4&#xff0c;\u4f18\u5148\u7ea7\u961f\u5217\u591a\u4e86\u4e00\u5c42\u7b97\u6cd5\u8d23\u4efb&#xff1a;\u5bb9\u5668\u7ef4\u62a4\u7a7a\u95f4&#xff0c;\u6bd4\u8f83\u5668\u5b9a\u4e49\u987a\u5e8f&#xff0c;\u5806\u7b97\u6cd5\u7ef4\u62a4\u5173\u7cfb\u3002<\/p>\n<h4>7.5 \u590d\u6742\u5ea6&#xff1a;\u628a\u5806\u7b97\u6cd5\u4e0e\u5bb9\u5668\u64cd\u4f5c\u5206\u5f00\u770b<\/h4>\n<table>\n<tr>\u64cd\u4f5c\u6838\u5fc3\u6210\u672c\u8fb9\u754c\u8bf4\u660e<\/tr>\n<tbody>\n<tr>\n<td>stack\/queue \u7684\u89c2\u5bdf<\/td>\n<td>\u901a\u5e38 O(1)<\/td>\n<td>\u4f7f\u7528\u6807\u51c6\u5e95\u5c42\u5bb9\u5668<\/td>\n<\/tr>\n<tr>\n<td>stack \u7684\u63d2\u5220<\/td>\n<td>\u5e95\u5c42\u5c3e\u63d2\u5c3e\u5220\u7684\u6210\u672c<\/td>\n<td>\u8fde\u7eed\u5b58\u50a8\u5c3e\u63d2\u53ef\u80fd\u6269\u5bb9&#xff0c;\u4e0d\u5ffd\u7565\u8fc1\u79fb\u6210\u672c<\/td>\n<\/tr>\n<tr>\n<td>queue \u7684\u63d2\u5220<\/td>\n<td>\u5e95\u5c42\u5c3e\u63d2\u5934\u5220\u7684\u6210\u672c<\/td>\n<td>\u9ed8\u8ba4 deque \u6216 list \u652f\u6301\u7aef\u90e8\u64cd\u4f5c<\/td>\n<\/tr>\n<tr>\n<td>priority_queue::top()<\/td>\n<td>O(1)<\/td>\n<td>\u5df2\u6709\u5806\u5173\u7cfb&#xff0c;\u4e0d\u518d\u626b\u63cf<\/td>\n<\/tr>\n<tr>\n<td>\u4f18\u5148\u7ea7\u961f\u5217\u63d2\u5165\u3001\u5220\u9664\u7684\u5806\u8c03\u6574<\/td>\n<td>O(log n)<\/td>\n<td>\u6811\u9ad8\u5ea6\u662f\u5bf9\u6570\u7ea7&#xff1b;\u8fd8\u9700\u52a0\u4e0a\u5e95\u5c42\u64cd\u4f5c\u6210\u672c<\/td>\n<\/tr>\n<tr>\n<td>\u9010\u4e2a\u63d2\u5165 n \u4e2a\u5143\u7d20<\/td>\n<td>O(n log n) \u7684\u4e0a\u754c<\/td>\n<td>\u6bcf\u6b21\u7ef4\u62a4\u4e00\u6761\u7956\u5148\u8def\u5f84<\/td>\n<\/tr>\n<tr>\n<td>\u4e00\u6b21\u5bf9 n \u4e2a\u5143\u7d20\u6279\u91cf\u5efa\u5806<\/td>\n<td>O(n)<\/td>\n<td>\u81ea\u5e95\u5411\u4e0a\u8c03\u6574&#xff0c;\u4e0d\u662f n \u6b21\u4ece\u53f6\u5b50\u8d70\u5230\u6839<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u4e3a\u4ec0\u4e48\u6279\u91cf\u5efa\u5806\u4e0d\u662f n log n&#xff1f;\u53f6\u5b50\u8282\u70b9\u4e0d\u7528\u8c03\u6574&#xff0c;\u5012\u6570\u7b2c\u4e8c\u5c42\u53ea\u9700\u5f88\u77ed\u8def\u5f84&#xff0c;\u80fd\u8d70\u63a5\u8fd1\u6811\u9ad8\u7684\u8282\u70b9\u975e\u5e38\u5c11\u3002\u628a\u5404\u5c42\u8282\u70b9\u6570\u91cf\u4e58\u4ee5\u5404\u81ea\u7684\u6700\u5927\u4e0b\u964d\u8ddd\u79bb\u76f8\u52a0&#xff0c;\u662f\u7ebf\u6027\u6570\u91cf\u7ea7\u3002<\/p>\n<p>make_heap\u5b98\u65b9\u8bf4\u660e\u6279\u91cf\u5efa\u5806\u81f3\u591a\u6267\u884c 3*N \u6b21\u6bd4\u8f83&#xff0c;\u4e5f\u5c31\u662f O (n)<\/p>\n<h3>8. \u6269\u5c55\u7ec3\u4e60<\/h3>\n<hr \/>\n<h4>8.1 \u7528\u4e24\u4e2a\u6808\u5b9e\u73b0\u6700\u5c0f\u6808<\/h4>\n<p>LeetCode 155&#xff1a;\u6700\u5c0f\u6808<\/p>\n<p>\u8981\u6c42\u5165\u6808\u3001\u51fa\u6808\u3001\u67e5\u8be2\u6808\u9876\u3001\u67e5\u8be2\u5f53\u524d\u6700\u5c0f\u503c\u90fd\u4e3a\u5e38\u6570\u7ea7\u64cd\u4f5c\u3002\u672c\u9898\u89c4\u5b9a\u51fa\u6808\u548c\u8bbf\u95ee\u65f6\u5bf9\u8c61\u975e\u7a7a\u3002<\/p>\n<p>\u601d\u8def&#xff1a; \u666e\u901a\u6808\u4fdd\u5b58\u6240\u6709\u5143\u7d20&#xff0c;\u8f85\u52a9\u6808\u4fdd\u5b58\u201c\u5f53\u524d\u6700\u5c0f\u503c\u53d8\u5316\u8bb0\u5f55\u201d\u3002\u65b0\u503c\u5c0f\u4e8e\u6216\u7b49\u4e8e\u5f53\u524d\u6700\u5c0f\u503c\u65f6&#xff0c;\u8f85\u52a9\u6808\u4e5f\u538b\u5165\u5b83&#xff1b;\u5220\u9664\u7684\u503c\u82e5\u7b49\u4e8e\u5f53\u524d\u6700\u5c0f\u503c&#xff0c;\u4e24\u4e2a\u6808\u4e00\u8d77\u5f39\u51fa\u3002<\/p>\n<p>\u53c2\u8003\u7b54\u6848<\/p>\n<p><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">MinStack<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">public<\/span><span class=\"token operator\">:<\/span><br \/>\n    <span class=\"token keyword\">void<\/span> <span class=\"token function\">push<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> value<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        _values<span class=\"token punctuation\">.<\/span><span class=\"token function\">push<\/span><span class=\"token punctuation\">(<\/span>value<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>_minimum<span class=\"token punctuation\">.<\/span><span class=\"token function\">empty<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">||<\/span> value <span class=\"token operator\">&lt;&#061;<\/span> _minimum<span class=\"token punctuation\">.<\/span><span class=\"token function\">top<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n            _minimum<span class=\"token punctuation\">.<\/span><span class=\"token function\">push<\/span><span class=\"token punctuation\">(<\/span>value<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token keyword\">void<\/span> <span class=\"token function\">pop<\/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>_values<span class=\"token punctuation\">.<\/span><span class=\"token function\">top<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;&#061;<\/span> _minimum<span class=\"token punctuation\">.<\/span><span class=\"token function\">top<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n            _minimum<span class=\"token punctuation\">.<\/span><span class=\"token function\">pop<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        _values<span class=\"token punctuation\">.<\/span><span class=\"token function\">pop<\/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\">int<\/span> <span class=\"token function\">top<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token keyword\">return<\/span> _values<span class=\"token punctuation\">.<\/span><span class=\"token function\">top<\/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\">int<\/span> <span class=\"token function\">getMin<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token keyword\">return<\/span> _minimum<span class=\"token punctuation\">.<\/span><span class=\"token function\">top<\/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\">bool<\/span> <span class=\"token function\">empty<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token keyword\">return<\/span> _values<span class=\"token punctuation\">.<\/span><span class=\"token function\">empty<\/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\">private<\/span><span class=\"token operator\">:<\/span><br \/>\n    std<span class=\"token double-colon punctuation\">::<\/span>stack<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span><span class=\"token operator\">&gt;<\/span> _values<span class=\"token punctuation\">;<\/span><br \/>\n    std<span class=\"token double-colon punctuation\">::<\/span>stack<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span><span class=\"token operator\">&gt;<\/span> _minimum<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<h4>8.2 \u7528\u4e24\u4e2a\u6808\u5b9e\u73b0\u5148\u8fdb\u5148\u51fa\u961f\u5217<\/h4>\n<p>LeetCode 232&#xff1a;\u7528\u6808\u5b9e\u73b0\u961f\u5217<\/p>\n<p>\u57fa\u672c\u8f93\u5165\u8f93\u51fa\u53ea\u9700\u6574\u6570&#xff0c;\u4e0d\u5fc5\u5f15\u5165\u66f4\u590d\u6742\u7684\u6570\u636e\u7c7b\u578b\u3002<\/p>\n<p>\u601d\u8def&#xff1a; \u8f93\u5165\u6808\u63a5\u6536\u5165\u961f\u5143\u7d20&#xff0c;\u8f93\u51fa\u6808\u63d0\u4f9b\u961f\u5934\u3002\u5f53\u8f93\u51fa\u6808\u4e3a\u7a7a\u65f6&#xff0c;\u624d\u628a\u8f93\u5165\u6808\u5168\u90e8\u5012\u5165\u8f93\u51fa\u6808\u3002\u4e00\u6b21\u5012\u8f6c\u4f7f\u6700\u65e9\u8fdb\u5165\u7684\u5143\u7d20\u6765\u5230\u8f93\u51fa\u6808\u9876\u3002<\/p>\n<table>\n<tr>\u52a8\u4f5c\u8f93\u5165\u6808&#xff0c;\u6309\u6808\u5e95\u5230\u6808\u9876\u8f93\u51fa\u6808&#xff0c;\u6309\u6808\u5e95\u5230\u6808\u9876\u5f53\u524d\u961f\u5934<\/tr>\n<tbody>\n<tr>\n<td>\u5165\u961f 1\u30012\u30013<\/td>\n<td>1 2 3<\/td>\n<td>\u7a7a<\/td>\n<td>\u5c1a\u672a\u8f6c\u79fb<\/td>\n<\/tr>\n<tr>\n<td>\u9996\u6b21\u8bbf\u95ee<\/td>\n<td>\u7a7a<\/td>\n<td>3 2 1<\/td>\n<td>1<\/td>\n<\/tr>\n<tr>\n<td>\u5220\u9664 1 \u540e\u5165\u961f 4\u30015<\/td>\n<td>4 5<\/td>\n<td>3 2<\/td>\n<td>2<\/td>\n<\/tr>\n<tr>\n<td>\u5220\u9664 2\u30013 \u540e\u518d\u6b21\u8bbf\u95ee<\/td>\n<td>\u7a7a<\/td>\n<td>5 4<\/td>\n<td>4<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u53c2\u8003\u7b54\u6848&#xff1a;<\/p>\n<p><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">MyQueue<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">public<\/span><span class=\"token operator\">:<\/span><br \/>\n    std<span class=\"token double-colon punctuation\">::<\/span>stack<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span><span class=\"token operator\">&gt;<\/span> st1<span class=\"token punctuation\">;<\/span><br \/>\n    std<span class=\"token double-colon punctuation\">::<\/span>stack<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span><span class=\"token operator\">&gt;<\/span> st2<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">MyQueue<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><\/p>\n<p>    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token keyword\">void<\/span> <span class=\"token function\">push<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> x<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        st1<span class=\"token punctuation\">.<\/span><span class=\"token function\">push<\/span><span class=\"token punctuation\">(<\/span>x<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token keyword\">int<\/span> <span class=\"token function\">pop<\/span><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>st2<span class=\"token punctuation\">.<\/span><span class=\"token function\">empty<\/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\">while<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span>st1<span class=\"token punctuation\">.<\/span><span class=\"token function\">empty<\/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                st2<span class=\"token punctuation\">.<\/span><span class=\"token function\">push<\/span><span class=\"token punctuation\">(<\/span>st1<span class=\"token punctuation\">.<\/span><span class=\"token function\">top<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                st1<span class=\"token punctuation\">.<\/span><span class=\"token function\">pop<\/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 punctuation\">}<\/span><br \/>\n        <span class=\"token keyword\">int<\/span> res <span class=\"token operator\">&#061;<\/span> st2<span class=\"token punctuation\">.<\/span><span class=\"token function\">top<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        st2<span class=\"token punctuation\">.<\/span><span class=\"token function\">pop<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> res<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token keyword\">int<\/span> <span class=\"token function\">peek<\/span><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>st2<span class=\"token punctuation\">.<\/span><span class=\"token function\">empty<\/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\">while<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span>st1<span class=\"token punctuation\">.<\/span><span class=\"token function\">empty<\/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                st2<span class=\"token punctuation\">.<\/span><span class=\"token function\">push<\/span><span class=\"token punctuation\">(<\/span>st1<span class=\"token punctuation\">.<\/span><span class=\"token function\">top<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                st1<span class=\"token punctuation\">.<\/span><span class=\"token function\">pop<\/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 punctuation\">}<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> st2<span class=\"token punctuation\">.<\/span><span class=\"token function\">top<\/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\">empty<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> st1<span class=\"token punctuation\">.<\/span><span class=\"token function\">empty<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&amp;&amp;<\/span> st2<span class=\"token punctuation\">.<\/span><span class=\"token function\">empty<\/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 punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<h3>9. 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