{"id":53084,"date":"2025-08-12T00:09:42","date_gmt":"2025-08-11T16:09:42","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/53084.html"},"modified":"2025-08-12T00:09:42","modified_gmt":"2025-08-11T16:09:42","slug":"%e4%b8%80%e5%91%a8%e4%b8%80%e4%b8%aa%e6%95%b0%e6%8d%ae%e7%bb%93%e6%9e%84-%e7%ac%ac%e4%b8%80%e5%91%a8-%e9%a1%ba%e5%ba%8f%e8%a1%a8%ef%bc%88%e4%b8%8b%ef%bc%89","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/53084.html","title":{"rendered":"\u4e00\u5468\u4e00\u4e2a\u6570\u636e\u7ed3\u6784 \u7b2c\u4e00\u5468 --- \u987a\u5e8f\u8868\uff08\u4e0b\uff09"},"content":{"rendered":"<\/p>\n<h4>\u6587\u7ae0\u76ee\u5f55<\/h4>\n<ul>\n<li>\u4e00\u3001ArrayList\u7684\u6784\u9020<\/li>\n<li>\u4e8c\u3001ArrayList\u5e38\u89c1\u64cd\u4f5c<\/li>\n<li>\u4e09\u3001ArrayList\u7684\u904d\u5386<\/li>\n<li>\u56db\u3001ArrayList\u7ec3\u4e60<\/li>\n<li>\n<ul>\n<li>1.\u3010\u5c0f\u7ec3\u4e60\u3011<\/li>\n<li>2.\u6768\u8f89\u4e09\u89d2<\/li>\n<li>3.\u7b80\u5355\u7684\u6d17\u724c\u7b97\u6cd5<\/li>\n<\/ul>\n<\/li>\n<li>\u4e94\u3001ArrayList\u5c0f\u7ed3<\/li>\n<\/ul>\n<p> \u5728\u4e0a\u4e00\u7ae0\u8282\u4e2d&#xff0c;\u6211\u4eec\u901a\u8fc7\u4ee3\u7801\u793a\u4f8b\u4ee5\u53ca\u753b\u56fe\u7684\u65b9\u5f0f\u8be6\u7ec6\u4e86\u89e3\u4e86\u987a\u5e8f\u8868&#xff0c;\u5e76\u6a21\u62df\u5b9e\u73b0\u4e86\u5b83\u3002\u90a3\u4e48&#xff0c;\u662f\u4e0d\u662f\u4ee5\u540e\u6bcf\u6b21\u9700\u8981\u7528\u5230\u987a\u5e8f\u8868\u8fd9\u79cd\u6570\u636e\u7ed3\u6784\u65f6&#xff0c;\u6211\u4eec\u90fd\u9700\u8981\u5148\u6a21\u62df\u5b9e\u73b0\u987a\u5e8f\u8868\u4e4b\u540e\u624d\u80fd\u4f7f\u7528\u5462&#xff1f;\u7b54\u6848\u662f\u5426\u5b9a\u7684\u3002<br \/>\n\u5728Java\u4e2d&#xff0c;\u63d0\u4f9b\u4e86ArrayList\u7c7b\u6765\u5e2e\u52a9\u6211\u4eec\u5b9e\u73b0\u987a\u5e8f\u8868\u8fd9\u79cd\u6570\u636e\u7ed3\u6784\u3002ArrayList\u662f\u4e00\u4e2a\u666e\u901a\u7684\u7c7b&#xff0c;\u5b9e\u73b0\u4e86List\u63a5\u53e3&#xff1a;<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250811160932-689a15bc3fa21.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><br \/>\n \u63a5\u4e0b\u6765&#xff0c;\u6211\u4eec\u5c31\u6765\u5b66\u4e60\u5728Java\u4e2dArrayList\u7c7b\u7684\u5177\u4f53\u7528\u6cd5\u3002<\/p>\n<h2>\u4e00\u3001ArrayList\u7684\u6784\u9020<\/h2>\n<p>\u5e38\u89c1\u7684ArrayList\u7684\u6784\u9020\u6709\u4e09\u79cd\u65b9\u5f0f&#xff1a;<\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">static<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">String<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> args<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/\u6784\u9020<\/span><br \/>\n        <span class=\"token class-name\">ArrayList<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">Integer<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> arrayList <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">ArrayList<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/\u65e0\u53c2\u6784\u9020<\/span><br \/>\n        <span class=\"token class-name\">List<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">Integer<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> list <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">ArrayList<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/\u6307\u5b9a\u987a\u5e8f\u8868\u5bb9\u91cf<\/span><br \/>\n        <span class=\"token class-name\">List<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">Integer<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> list1 <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">ArrayList<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token punctuation\">(<\/span>list<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/\u53c2\u6570\u4e3a \u987a\u5e8f\u8868<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>\u5206\u522b\u662f&#xff1a;\u65e0\u53c2\u6784\u9020\u3001\u6307\u5b9a\u5bb9\u91cf\u3001\u53c2\u6570\u4e3a\u987a\u5e8f\u8868\u3002\u56e0\u4e3aArrayList\u7c7b\u5b9e\u73b0\u4e86List\u63a5\u53e3&#xff0c;\u6240\u4ee5\u5728\u8fdb\u884c\u6784\u9020\u65f6&#xff0c;\u7b49\u53f7\u5de6\u8fb9\u65e2\u53ef\u4ee5\u662fArrayList\u4e5f\u53ef\u4ee5\u662fList\u3002\u5728\u4f7f\u7528\u7b2c\u4e09\u79cd\u6784\u9020\u65b9\u6cd5\u65f6&#xff0c;\u9700\u6ce8\u610f&#xff1a;list\u4e2d\u5143\u7d20\u7684\u7c7b\u578b\u5fc5\u987b\u4e0elist1\u4e2d\u5143\u7d20\u7684\u7c7b\u578b\u76f8\u540c\u624d\u884c&#xff0c;\u5426\u5219\u4f1a\u7f16\u8bd1\u62a5\u9519\u3002<\/p>\n<h2>\u4e8c\u3001ArrayList\u5e38\u89c1\u64cd\u4f5c<\/h2>\n<p>ArrayList\u7c7b\u4e2d\u63d0\u4f9b\u4e86\u975e\u5e38\u591a\u7684\u65b9\u6cd5&#xff0c;\u4f7f\u7528\u9891\u7387\u6700\u9ad8\u7684\u4e3a\u4ee5\u4e0b\u8fd9\u4e9b&#xff1a; <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250811160934-689a15be832e3.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> \u8fd9\u4e9b\u65b9\u6cd5\u7edd\u5927\u90e8\u5206\u6211\u4eec\u5df2\u7ecf\u81ea\u5df1\u6a21\u62df\u5b9e\u73b0\u8fc7\u4e86&#xff0c;\u7528\u6cd5\u548c\u6211\u4eec\u6a21\u62df\u5b9e\u73b0\u7684\u4e00\u6837&#xff0c;\u4e0d\u8fc7\u6709\u4e00\u4e9b\u7279\u6b8a\u7684\u65b9\u6cd5\u9700\u8981\u7279\u6b8a\u8bb0\u5fc6&#xff1a;<\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">static<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">String<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> args<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/\u65b9\u6cd5\u6d4b\u8bd5<\/span><br \/>\n        <span class=\"token class-name\">List<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">Integer<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> list <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">ArrayList<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/\u65e0\u53c2\u6784\u9020<\/span><br \/>\n        list<span class=\"token punctuation\">.<\/span><span class=\"token function\">add<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        list<span class=\"token punctuation\">.<\/span><span class=\"token function\">add<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        list<span class=\"token punctuation\">.<\/span><span class=\"token function\">add<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        list<span class=\"token punctuation\">.<\/span><span class=\"token function\">add<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        list<span class=\"token punctuation\">.<\/span><span class=\"token function\">add<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">5<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>list<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/[1, 2, 3, 4, 5]<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/addAll:\u6dfb\u52a0\u4e00\u4e2a\u987a\u5e8f\u8868\u4e2d\u7684\u6240\u6709\u5143\u7d20<\/span><br \/>\n        list<span class=\"token punctuation\">.<\/span><span class=\"token function\">addAll<\/span><span class=\"token punctuation\">(<\/span>list<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>list<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/[1, 2, 3, 4, 5, 1, 2, 3, 4, 5]<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/\u4f7f\u7528remove\u8fdb\u884c\u5220\u9664\u65f6&#xff0c;\u5982\u679c\u60f3\u8981\u5220\u9664\u503c&#xff0c;\u9700\u8981\u901a\u8fc7new\u5173\u952e\u5b57<\/span><br \/>\n        list<span class=\"token punctuation\">.<\/span><span class=\"token function\">remove<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>list<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/[1, 2, 4, 5, 1, 2, 3, 4, 5]<\/span><br \/>\n        list<span class=\"token punctuation\">.<\/span><span class=\"token function\">remove<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">new<\/span> <span class=\"token class-name\">Integer<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>list<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/[1, 4, 5, 1, 2, 3, 4, 5]<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/\u4f7f\u7528subList\u5bf9\u987a\u5e8f\u8868\u8fdb\u884c\u622a\u53d6<\/span><br \/>\n        <span class=\"token class-name\">List<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">Integer<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> list1 <span class=\"token operator\">&#061;<\/span> list<span class=\"token punctuation\">.<\/span><span class=\"token function\">subList<\/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 punctuation\">;<\/span> <span class=\"token comment\">\/\/\u5de6\u95ed\u53f3\u5f00\u533a\u95f4<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>list1<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/[4, 5]<\/span><br \/>\n        <span class=\"token comment\">\/\/\u5f53\u4fee\u6539\u622a\u53d6\u5230\u7684\u987a\u5e8f\u8868\u4e2d\u7684\u503c\u65f6&#xff0c;\u539f\u987a\u5e8f\u8868\u5bf9\u5e94\u4f4d\u7f6e\u7684\u503c\u4e5f\u4f1a\u88ab\u4fee\u6539<\/span><br \/>\n        list1<span class=\"token punctuation\">.<\/span><span class=\"token function\">set<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">666<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>list1<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/[4, 666]<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>list<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/[1, 4, 666, 1, 2, 3, 4, 5]<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>\u5728\u4e0a\u9762\u8fd9\u6bb5\u4ee3\u7801\u4e2d&#xff0c;\u6211\u4eec\u8fd8\u9700\u6ce8\u610f\u4e00\u70b9&#xff1a;\u5f53\u8c03\u7528\u65e0\u53c2\u7684\u6784\u9020\u65b9\u6cd5\u65f6&#xff0c;\u4e0d\u4f1a\u5206\u914d\u5185\u5b58&#xff1b;\u9ed8\u8ba4\u662f\u5728\u7b2c\u4e00\u6b21\u8c03\u7528add\u65b9\u6cd5\u65f6&#xff0c;\u5206\u914d\u5927\u5c0f\u4e3a10\u7684\u5185\u5b58\u7a7a\u95f4&#xff1b;\u5f53\u7a7a\u95f4\u4e0d\u591f\u9700\u8981\u6269\u5bb9\u65f6&#xff0c;\u9ed8\u8ba4\u4ee51.5\u500d\u5927\u5c0f\u8fdb\u884c\u6269\u5bb9\u3002<\/p>\n<h2>\u4e09\u3001ArrayList\u7684\u904d\u5386<\/h2>\n<p>ArrayList\u7684\u904d\u5386\u6709\u5f88\u591a\u79cd\u65b9\u5f0f&#xff1a;\u76f4\u63a5\u8f93\u51fa\u3001for\u5faa\u73af\u904d\u5386\u4ee5\u53ca\u8fed\u4ee3\u5668&#xff1a;<\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">static<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">String<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> args<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/\u904d\u5386<\/span><br \/>\n        <span class=\"token class-name\">List<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">Integer<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> list <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">ArrayList<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/\u65e0\u53c2\u6784\u9020<\/span><br \/>\n        list<span class=\"token punctuation\">.<\/span><span class=\"token function\">add<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        list<span class=\"token punctuation\">.<\/span><span class=\"token function\">add<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        list<span class=\"token punctuation\">.<\/span><span class=\"token function\">add<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        list<span class=\"token punctuation\">.<\/span><span class=\"token function\">add<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        list<span class=\"token punctuation\">.<\/span><span class=\"token function\">add<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">5<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/\u65b9\u5f0f\u4e00&#xff1a;sout<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>list<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/\u6e90\u7801\u4e2d\u91cd\u5199\u4e86toString\u65b9\u6cd5<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;&#061;&#061;&#061;&#061;&#061;&#061;&#061;&#061;&#061;&#061;&#061;&#061;&#061;&#061;&#061;&#061;&#061;&#061;&#061;&#061;&#061;&#061;&#061;&#061;&#061;&#061;&#061;&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/\u65b9\u5f0f\u4e8c&#xff1a;for\u5faa\u73af<\/span><br \/>\n        <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> 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> list<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> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">print<\/span><span class=\"token punctuation\">(<\/span>list<span class=\"token punctuation\">.<\/span><span class=\"token function\">get<\/span><span class=\"token punctuation\">(<\/span>i<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#043;<\/span> <span class=\"token string\">&#034; &#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/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 class-name\">Integer<\/span> x <span class=\"token operator\">:<\/span> list<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">print<\/span><span class=\"token punctuation\">(<\/span>x <span class=\"token operator\">&#043;<\/span> <span class=\"token string\">&#034; &#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;&#061;&#061;&#061;&#061;&#061;&#061;&#061;&#061;&#061;&#061;&#061;&#061;&#061;&#061;&#061;&#061;&#061;&#061;&#061;&#061;&#061;&#061;&#061;&#061;&#061;&#061;&#061;&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token comment\">\/**<br \/>\n         * \u65b9\u5f0f\u4e09&#xff1a;\u8fed\u4ee3\u5668<br \/>\n         * Iterator \u548c ListIterator\u90fd\u53ef\u4ee5\u904d\u5386\u987a\u5e8f\u8868&#xff0c;ListIterator\u8fd8\u53ef\u4ee5\u9006\u5e8f\u904d\u5386<br \/>\n         *\/<\/span><br \/>\n        <span class=\"token class-name\">Iterator<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">Integer<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> iterator <span class=\"token operator\">&#061;<\/span> list<span class=\"token punctuation\">.<\/span><span class=\"token function\">iterator<\/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>iterator<span class=\"token punctuation\">.<\/span><span class=\"token function\">hasNext<\/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 class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">print<\/span><span class=\"token punctuation\">(<\/span>iterator<span class=\"token punctuation\">.<\/span><span class=\"token function\">next<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#043;<\/span> <span class=\"token string\">&#034; &#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token class-name\">ListIterator<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">Integer<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> listIterator <span class=\"token operator\">&#061;<\/span> list<span class=\"token punctuation\">.<\/span><span class=\"token function\">listIterator<\/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>listIterator<span class=\"token punctuation\">.<\/span><span class=\"token function\">hasNext<\/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 class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">print<\/span><span class=\"token punctuation\">(<\/span>listIterator<span class=\"token punctuation\">.<\/span><span class=\"token function\">next<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#043;<\/span> <span class=\"token string\">&#034; &#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/\u4f7f\u7528ListIterator\u9006\u5e8f\u8f93\u51fa<\/span><br \/>\n        <span class=\"token class-name\">ListIterator<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">Integer<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> listIterator1 <span class=\"token operator\">&#061;<\/span> list<span class=\"token punctuation\">.<\/span><span class=\"token function\">listIterator<\/span><span class=\"token punctuation\">(<\/span>list<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><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span>listIterator1<span class=\"token punctuation\">.<\/span><span class=\"token function\">hasPrevious<\/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 class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">print<\/span><span class=\"token punctuation\">(<\/span>listIterator1<span class=\"token punctuation\">.<\/span><span class=\"token function\">previous<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#043;<\/span> <span class=\"token string\">&#034; &#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/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>\u5728\u8fd9\u4e9b\u65b9\u5f0f\u4e2d&#xff0c;\u6700\u5e38\u4f7f\u7528\u7684\u662ffor-i\u5faa\u73af\u4ee5\u53cafor-each\u5faa\u73af\u3002<\/p>\n<h2>\u56db\u3001ArrayList\u7ec3\u4e60<\/h2>\n<h3>1.\u3010\u5c0f\u7ec3\u4e60\u3011<\/h3>\n<p>\u9898\u76ee&#xff1a; \u5df2\u77e5\u4e24\u4e2a\u5b57\u7b26\u4e32s1\u3001s2&#xff0c;\u73b0\u5728\u8981\u6c42&#xff1a;\u5220\u9664\u7b2c\u4e00\u4e2a\u5b57\u7b26\u4e32\u4e2d\u51fa\u73b0\u7684 \u6240\u6709\u7684 \u7b2c\u4e8c\u4e2a\u5b57\u7b26\u4e32\u4e2d\u7684\u5b57\u7b26&#xff1a;<\/p>\n<p>\u6839\u636e\u9898\u610f&#xff0c;\u6211\u4eec\u9700\u8981\u5220\u9664s1\u4e2d\u51fa\u73b0\u7684\u6240\u6709\u7684s2\u4e2d\u7684\u5b57\u7b26&#xff0c;\u90a3\u4e48&#xff0c;\u6211\u4eec\u5c31\u53ef\u4ee5\u904d\u5386s1&#xff0c;\u83b7\u53d6s1\u4e2d\u6240\u6709\u7684\u5b57\u7b26&#xff0c;\u770b\u8fd9\u4e2a\u5b57\u7b26\u662f\u5426\u4e3as2\u4e2d\u7684\u5b57\u7b26&#xff0c;\u5982\u679c\u4e0d\u662f&#xff0c;\u6211\u4eec\u5c31\u5c06\u6b64\u5b57\u7b26\u6dfb\u52a0\u5230\u987a\u5e8f\u8868\u4e2d&#xff0c;\u6700\u540e\u8fd4\u56de\u4e00\u4e2a\u987a\u5e8f\u8868\u5373\u53ef\u3002<\/p>\n<p>    <span class=\"token comment\">\/\/\u7f16\u5199\u4e00\u4e2a\u65b9\u6cd5\u5b9e\u73b0\u4e3b\u8981\u64cd\u4f5c<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">static<\/span> <span class=\"token class-name\">ArrayList<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">Character<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> <span class=\"token function\">del<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">String<\/span> s1<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">String<\/span> s2<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/\u521b\u5efa\u4e00\u4e2a\u987a\u5e8f\u8868&#xff0c;\u63a5\u6536s1\u4e2d\u4e0es2\u4e2d\u4e0d\u91cd\u590d\u7684\u5b57\u7b26<\/span><br \/>\n        <span class=\"token class-name\">ArrayList<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">Character<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> arrayList <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">ArrayList<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token comment\">\/\/\u904d\u5386s1<\/span><br \/>\n        <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> 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> s1<span class=\"token punctuation\">.<\/span><span class=\"token function\">length<\/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> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token comment\">\/\/\u83b7\u53d6\u5bf9\u5e94\u4e0b\u6807\u4f4d\u7f6e\u7684\u5b57\u7b26<\/span><br \/>\n            <span class=\"token keyword\">char<\/span> ch <span class=\"token operator\">&#061;<\/span> s1<span class=\"token punctuation\">.<\/span><span class=\"token function\">charAt<\/span><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><span class=\"token operator\">!<\/span>s2<span class=\"token punctuation\">.<\/span><span class=\"token function\">contains<\/span><span class=\"token punctuation\">(<\/span>ch <span class=\"token operator\">&#043;<\/span> <span class=\"token string\">&#034;&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span><br \/>\n                arrayList<span class=\"token punctuation\">.<\/span><span class=\"token function\">add<\/span><span class=\"token punctuation\">(<\/span>ch<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> arrayList<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">static<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">String<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> args<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/\u5c0f\u7ec3\u4e60<\/span><br \/>\n        <span class=\"token class-name\">String<\/span> s1 <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;welcome to victim&#034;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">String<\/span> s2 <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;come&#034;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">ArrayList<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">Character<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> ret <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">del<\/span><span class=\"token punctuation\">(<\/span>s1<span class=\"token punctuation\">,<\/span> s2<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/\u63a5\u6536\u8fd4\u56de\u503c<\/span><br \/>\n        <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Character<\/span> x <span class=\"token operator\">:<\/span> ret<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">print<\/span><span class=\"token punctuation\">(<\/span>x<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<h3>2.\u6768\u8f89\u4e09\u89d2<\/h3>\n<p>\u6768\u8f89\u4e09\u89d2 <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250811160936-689a15c04c0b8.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> \u5728\u89e3\u51b3\u8fd9\u9053\u5728\u7ebf\u7f16\u7a0b\u9898\u65f6&#xff0c;\u6211\u4eec\u9700\u8981\u6ce8\u610f\u7406\u89e3\u4ee3\u7801\u6a21\u677f\u4e2d\u7ed9\u51fa\u7684\u8fd4\u56de\u503c\u7684\u542b\u4e49&#xff1a;\u6211\u4eec\u5df2\u7ecf\u77e5\u9053\u987a\u5e8f\u8868\u7684\u5e95\u5c42\u5176\u5b9e\u662f\u4e00\u4e2a\u6570\u7ec4&#xff0c;\u90a3\u4e48\u5bf9\u4e8e\u672c\u9898\u4e2d\u7ed9\u51fa\u7684\u8fd4\u56de\u503c&#xff0c;\u6211\u4eec\u5c31\u53ef\u4ee5\u7406\u89e3\u4e3a\u5176\u672c\u8d28\u662f\u4e00\u4e2a\u4e8c\u7ef4\u6570\u7ec4&#xff1a; <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250811160936-689a15c0dab63.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> \u6211\u4eec\u4e3a\u6768\u8f89\u4e09\u89d2\u7684\u6bcf\u4e00\u884c\u90fd\u521b\u5efa\u4e00\u4e2a\u987a\u5e8f\u8868&#xff0c;\u5b58\u50a8\u5bf9\u5e94\u884c\u4e2d\u7684\u6570\u636e\u5143\u7d20&#xff0c;\u6700\u540e\u518d\u5c06\u8fd9\u4e9b\u987a\u5e8f\u8868\u90fd\u5b58\u50a8\u5230\u4e00\u4e2a\u65b0\u7684\u987a\u5e8f\u8868\u4e2d&#xff0c;\u5728\u8fd9\u4e2a\u65b0\u7684\u987a\u5e8f\u8868\u4e2d\u7684\u6bcf\u4e2a\u5143\u7d20\u90fd\u662f\u4e00\u4e2a\u987a\u5e8f\u8868\u3002<\/p>\n<p>\u6211\u4eec\u518d\u56de\u5f52\u5230\u8fd9\u4e2a\u6570\u5b66\u95ee\u9898\u672c\u8eab&#xff0c;\u53ef\u4ee5\u89c2\u5bdf\u5230&#xff0c;\u6bcf\u4e00\u884c\u7684\u7b2c\u4e00\u4e2a\u5143\u7d20\u548c\u6700\u540e\u4e00\u4e2a\u5143\u7d20\u7684\u503c\u90fd\u4e3a1&#xff0c;\u6211\u4eec\u518d\u5c06\u6768\u8f89\u4e09\u89d2\u53d8\u6362\u4e3a\u76f4\u89d2\u4e09\u89d2\u5f62\u7684\u5f62\u5f0f\u8fdb\u884c\u89c2\u5bdf&#xff0c;\u90a3\u4e48&#xff0c;\u6bcf\u4e00\u4e2a\u5143\u7d20\u90fd\u662f\u5176\u4e0a\u65b9\u5143\u7d20\u548c\u5176\u4e0a\u65b9\u5143\u7d20\u7684\u524d\u4e00\u4e2a\u5143\u7d20\u7684\u548c\u3002<\/p>\n<p><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Solution<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token class-name\">List<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">List<\/span><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">Integer<\/span><span class=\"token punctuation\">&gt;<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> <span class=\"token function\">generate<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> numRows<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\">List<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">List<\/span><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">Integer<\/span><span class=\"token punctuation\">&gt;<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> list <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">ArrayList<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/\u5b9a\u4e49\u4e8c\u7ef4\u987a\u5e8f\u8868<\/span><br \/>\n        <span class=\"token class-name\">List<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">Integer<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> row <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">ArrayList<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/\u5b9a\u4e49\u6bcf\u4e00\u884c\u7684\u987a\u5e8f\u8868<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/\u56e0\u4e3a\u7b2c\u4e00\u884c\u53ea\u6709\u4e00\u4e2a\u5143\u7d20&#xff0c;\u5bf9\u7b2c\u4e00\u884c\u5355\u72ec\u5904\u7406<\/span><br \/>\n        row<span class=\"token punctuation\">.<\/span><span class=\"token function\">add<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        list<span class=\"token punctuation\">.<\/span><span class=\"token function\">add<\/span><span class=\"token punctuation\">(<\/span>row<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token comment\">\/\/\u4ee3\u7801\u8fd0\u884c\u81f3\u6b64&#xff0c;\u6768\u8f89\u4e09\u89d2\u7b2c\u4e00\u884c\u5904\u7406\u5b8c\u6bd5<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/\u4ee5\u4e0b\u4ee3\u7801&#xff0c;\u5bf9\u7b2c\u4e8c\u884c\u53ca\u4ee5\u540e\u884c\u6570 \u8fdb\u884c\u5904\u7406<\/span><br \/>\n        <span class=\"token keyword\">for<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> i <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span> i <span class=\"token operator\">&lt;<\/span> numRows<span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token class-name\">List<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">Integer<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> curRow <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">ArrayList<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/\u6bcf\u4e00\u884c\u4e00\u4e2a\u987a\u5e8f\u8868<\/span><br \/>\n            curRow<span class=\"token punctuation\">.<\/span><span class=\"token function\">add<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/\u987a\u5e8f\u8868\u7684\u7b2c\u4e00\u4e2a\u5143\u7d20<\/span><\/p>\n<p>            <span class=\"token class-name\">List<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">Integer<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> preRow <span class=\"token operator\">&#061;<\/span> list<span class=\"token punctuation\">.<\/span><span class=\"token function\">get<\/span><span class=\"token punctuation\">(<\/span>i <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 comment\">\/\/\u83b7\u53d6\u4e0a\u4e00\u884c<\/span><br \/>\n            <span class=\"token keyword\">for<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> j <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span> j <span class=\"token operator\">&lt;<\/span> i<span class=\"token punctuation\">;<\/span> j<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                <span class=\"token keyword\">int<\/span> x <span class=\"token operator\">&#061;<\/span> preRow<span class=\"token punctuation\">.<\/span><span class=\"token function\">get<\/span><span class=\"token punctuation\">(<\/span>j<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#043;<\/span> preRow<span class=\"token punctuation\">.<\/span><span class=\"token function\">get<\/span><span class=\"token punctuation\">(<\/span>j <span class=\"token operator\">&#8211;<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                curRow<span class=\"token punctuation\">.<\/span><span class=\"token function\">add<\/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>            curRow<span class=\"token punctuation\">.<\/span><span class=\"token function\">add<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/\u987a\u5e8f\u8868\u7684\u6700\u540e\u4e00\u4e2a\u5143\u7d20<\/span><\/p>\n<p>            list<span class=\"token punctuation\">.<\/span><span class=\"token function\">add<\/span><span class=\"token punctuation\">(<\/span>curRow<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/\u6dfb\u52a0\u5230\u4e8c\u7ef4\u987a\u5e8f\u8868\u4e2d<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> list<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h3>3.\u7b80\u5355\u7684\u6d17\u724c\u7b97\u6cd5<\/h3>\n<p>\u73b0\u5728\u6709\u8fd9\u6837\u4e00\u4e2a\u573a\u666f&#xff1a;\u6709\u4e00\u526f\u65b0\u7684\u6251\u514b\u724c&#xff08;\u6392\u9664\u5927\u5c0f\u738b&#xff09;&#xff0c;\u4e09\u4e2a\u4eba\u73a9&#xff0c;\u5148\u5f00\u59cb\u6d17\u724c&#xff0c;\u7136\u540e\u4e00\u4eba\u6293\u4e00\u5f20&#xff0c;\u6293\u4e94\u8f6e&#xff0c;\u770b\u6bcf\u4e2a\u4eba\u90fd\u6293\u5230\u7684\u662f\u4ec0\u4e48\u724c&#xff1a; <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250811160938-689a15c25ebbb.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> \u6211\u4eec\u5148\u5bf9\u724c\u8fdb\u884c\u5b9a\u4e49&#xff1a;<\/p>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Card<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token class-name\">String<\/span> suit<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/\u82b1\u8272<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">int<\/span> rank<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/\u6570\u5b57<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token class-name\">Card<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">String<\/span> suit<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span> rank<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>suit <span class=\"token operator\">&#061;<\/span> suit<span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>rank <span class=\"token operator\">&#061;<\/span> rank<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token annotation punctuation\">&#064;Override<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token class-name\">String<\/span> <span class=\"token function\">toString<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token comment\">\/\/        return &#034;Card{&#034; &#043;<\/span><br \/>\n<span class=\"token comment\">\/\/                &#034;suit&#061;&#039;&#034; &#043; suit &#043; &#039;\\\\&#039;&#039; &#043;<\/span><br \/>\n<span class=\"token comment\">\/\/                &#034;, rank&#061;&#034; &#043; rank &#043;<\/span><br \/>\n<span class=\"token comment\">\/\/                &#039;}&#039;;<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> suit <span class=\"token operator\">&#043;<\/span> rank<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u63a5\u4e0b\u6765&#xff0c;\u6211\u4eec\u4f9d\u6b21\u5b8c\u6210\u5b9a\u4e49\u4e00\u526f\u65b0\u7684\u724c\u3001\u6d17\u724c\u3001\u53d1\u724c\u64cd\u4f5c&#xff1a;<\/p>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">CardList<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">static<\/span> <span class=\"token keyword\">final<\/span> <span class=\"token class-name\">String<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> SUITS <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;\u2660&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;\u2665&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;\u2666&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;\u2663&#034;<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/\u5b9a\u4e49\u56db\u79cd\u82b1\u8272<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/\u5b9a\u4e49\u4e00\u526f\u65b0\u7684\u724c<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">static<\/span> <span class=\"token class-name\">List<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">Card<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> <span class=\"token function\">newCard<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/\u7528\u987a\u5e8f\u8868\u5b58\u653e\u724c<\/span><br \/>\n        <span class=\"token class-name\">List<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">Card<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> list <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">ArrayList<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> 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> SUITS<span class=\"token punctuation\">.<\/span>length<span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> j <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span> j <span class=\"token operator\">&lt;&#061;<\/span><span class=\"token number\">13<\/span> <span class=\"token punctuation\">;<\/span> j<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                <span class=\"token class-name\">Card<\/span> card <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">Card<\/span><span class=\"token punctuation\">(<\/span>SUITS<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span> j<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                list<span class=\"token punctuation\">.<\/span><span class=\"token function\">add<\/span><span class=\"token punctuation\">(<\/span>card<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> list<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/\u6d17\u724c<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">static<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">washCard<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">List<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">Card<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> list<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/\u751f\u6210\u968f\u673a\u6570\u4ea4\u6362\u724c&#xff0c;\u8fbe\u5230\u6d17\u724c\u7684\u76ee\u7684<\/span><br \/>\n        <span class=\"token class-name\">Random<\/span> random <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">Random<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> i <span class=\"token operator\">&#061;<\/span> list<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> i <span class=\"token operator\">&gt;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">&#8212;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token keyword\">int<\/span> index <span class=\"token operator\">&#061;<\/span> random<span class=\"token punctuation\">.<\/span><span class=\"token function\">nextInt<\/span><span class=\"token punctuation\">(<\/span>i<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token function\">swap<\/span><span class=\"token punctuation\">(<\/span>list<span class=\"token punctuation\">,<\/span> i<span class=\"token punctuation\">,<\/span> index<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 comment\">\/\/\u4ea4\u6362\u724c<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">static<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">swap<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">List<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">Card<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> list<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span> i<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span> j<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\">Card<\/span> tmp <span class=\"token operator\">&#061;<\/span> list<span class=\"token punctuation\">.<\/span><span class=\"token function\">get<\/span><span class=\"token punctuation\">(<\/span>i<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        list<span class=\"token punctuation\">.<\/span><span class=\"token function\">set<\/span><span class=\"token punctuation\">(<\/span>i<span class=\"token punctuation\">,<\/span> list<span class=\"token punctuation\">.<\/span><span class=\"token function\">get<\/span><span class=\"token punctuation\">(<\/span>j<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        list<span class=\"token punctuation\">.<\/span><span class=\"token function\">set<\/span><span class=\"token punctuation\">(<\/span>j<span class=\"token punctuation\">,<\/span> tmp<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">static<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">String<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> args<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\">List<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">Card<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> list <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">newCard<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>list<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token function\">washCard<\/span><span class=\"token punctuation\">(<\/span>list<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>list<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/\u7528\u6765\u5b58\u653e\u4e09\u4e2a\u4eba\u5404\u81ea\u7684\u724c<\/span><br \/>\n        <span class=\"token class-name\">List<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">Card<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> p1 <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">ArrayList<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">List<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">Card<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> p2 <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">ArrayList<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">List<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">Card<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> p3 <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">ArrayList<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/\u5b58\u653e\u4e09\u4e2a\u4eba<\/span><br \/>\n        <span class=\"token class-name\">List<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">List<\/span><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">Card<\/span><span class=\"token punctuation\">&gt;<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> p <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">ArrayList<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        p<span class=\"token punctuation\">.<\/span><span class=\"token function\">add<\/span><span class=\"token punctuation\">(<\/span>p1<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        p<span class=\"token punctuation\">.<\/span><span class=\"token function\">add<\/span><span class=\"token punctuation\">(<\/span>p2<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        p<span class=\"token punctuation\">.<\/span><span class=\"token function\">add<\/span><span class=\"token punctuation\">(<\/span>p3<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/\u53d1\u724c<\/span><br \/>\n        <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> 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> <span class=\"token number\">5<\/span><span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> j <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> j <span class=\"token operator\">&lt;<\/span> <span class=\"token number\">3<\/span><span class=\"token punctuation\">;<\/span> j<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                <span class=\"token class-name\">Card<\/span> card <span class=\"token operator\">&#061;<\/span> list<span class=\"token punctuation\">.<\/span><span class=\"token function\">remove<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                p<span class=\"token punctuation\">.<\/span><span class=\"token function\">get<\/span><span class=\"token punctuation\">(<\/span>j<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">add<\/span><span class=\"token punctuation\">(<\/span>card<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><\/p>\n<p>        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;A\u7684\u724c&#xff1a;&#034;<\/span> <span class=\"token operator\">&#043;<\/span> p<span class=\"token punctuation\">.<\/span><span class=\"token function\">get<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;B\u7684\u724c&#xff1a;&#034;<\/span> <span class=\"token operator\">&#043;<\/span> p<span class=\"token punctuation\">.<\/span><span class=\"token function\">get<\/span><span class=\"token punctuation\">(<\/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 class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;C\u7684\u724c&#xff1a;&#034;<\/span> <span class=\"token operator\">&#043;<\/span> p<span class=\"token punctuation\">.<\/span><span class=\"token function\">get<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u5269\u7684\u724c&#xff1a;&#034;<\/span> <span class=\"token operator\">&#043;<\/span> list<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u4e00\u4e2a\u7b80\u5355\u7684\u6d17\u724c\u7b97\u6cd5\u5c31\u5b8c\u6210\u5566\u3002<\/p>\n<h2>\u4e94\u3001ArrayList\u5c0f\u7ed3<\/h2>\n<p>ArrayList\u5e95\u5c42\u662f\u6570\u7ec4\u5b9e\u73b0\u7684&#xff0c;\u6240\u4ee5\u5728\u8fdb\u884c\u6709\u5173\u67e5\u627e\u7684\u64cd\u4f5c\u65f6&#xff0c;\u901f\u5ea6\u5f88\u5feb&#xff1b;\u4f46\u4e5f\u662f\u56e0\u4e3a\u5e95\u5c42\u662f\u6570\u7ec4\u5b9e\u73b0\u7684&#xff0c;\u8fd9\u4e5f\u5bfc\u81f4\u4e86\u5728\u8fdb\u884c\u589e\u52a0\u6216\u8005\u5220\u9664\u64cd\u4f5c\u65f6&#xff0c;\u9700\u8981\u9010\u4e2a\u79fb\u52a8\u5143\u7d20&#xff0c;\u6548\u7387\u5f88\u4f4e&#xff0c;\u901f\u5ea6\u6162&#xff1b;\u5728\u8fdb\u884c\u6269\u5bb9\u64cd\u4f5c\u65f6&#xff0c;1.5\u500d\u7684\u6269\u5bb9\u5927\u5c0f\u4e5f\u53ef\u80fd\u4f1a\u5bfc\u81f4\u5f88\u591a\u7a7a\u95f4\u7684\u6d6a\u8d39\u3002<\/p>\n<hr \/>\n<p>Ending\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb346\u6b21\uff0c\u70b9\u8d5e8\u6b21\uff0c\u6536\u85cf10\u6b21\u3002ArrayList\u6784\u9020\u3001ArrayList\u4f7f\u7528\u3001\u904d\u5386ArrayList\u3001\u6768\u8f89\u4e09\u89d2\u3001ArrayList\u4f18\u7f3a\u70b9<\/p>\n","protected":false},"author":2,"featured_media":53079,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[99,5351,1813],"topic":[],"class_list":["post-53084","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-java","tag-5351","tag-1813"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u4e00\u5468\u4e00\u4e2a\u6570\u636e\u7ed3\u6784 \u7b2c\u4e00\u5468 - \u987a\u5e8f\u8868\uff08\u4e0b\uff09 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wsisp.com\/helps\/53084.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u4e00\u5468\u4e00\u4e2a\u6570\u636e\u7ed3\u6784 \u7b2c\u4e00\u5468 - \u987a\u5e8f\u8868\uff08\u4e0b\uff09 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"og:description\" content=\"\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb346\u6b21\uff0c\u70b9\u8d5e8\u6b21\uff0c\u6536\u85cf10\u6b21\u3002ArrayList\u6784\u9020\u3001ArrayList\u4f7f\u7528\u3001\u904d\u5386ArrayList\u3001\u6768\u8f89\u4e09\u89d2\u3001ArrayList\u4f18\u7f3a\u70b9\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.wsisp.com\/helps\/53084.html\" \/>\n<meta property=\"og:site_name\" content=\"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"article:published_time\" content=\"2025-08-11T16:09:42+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250811160932-689a15bc3fa21.png\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/53084.html\",\"url\":\"https:\/\/www.wsisp.com\/helps\/53084.html\",\"name\":\"\u4e00\u5468\u4e00\u4e2a\u6570\u636e\u7ed3\u6784 \u7b2c\u4e00\u5468 - 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