{"id":113311,"date":"2026-10-05T23:33:06","date_gmt":"2026-10-05T15:33:06","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/113311.html"},"modified":"2026-10-05T23:33:06","modified_gmt":"2026-10-05T15:33:06","slug":"%e5%8d%95%e9%93%be%e8%a1%a8_leetcode_276-%e5%8f%8d%e8%bd%ac%e9%93%be%e8%a1%a8","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/113311.html","title":{"rendered":"\u5355\u94fe\u8868_LeetCode_276.\u53cd\u8f6c\u94fe\u8868"},"content":{"rendered":"<\/p>\n<h4>\u6587\u7ae0\u76ee\u5f55<\/h4>\n<ul>\n<li>\u4e00\u3001\u9898\u76ee<\/li>\n<li>\n<ul>\n<li>1.\u9898\u76ee\u63cf\u8ff0<\/li>\n<li>2.\u9898\u76ee\u94fe\u63a5<\/li>\n<\/ul>\n<\/li>\n<li>\u4e8c\u3001\u9898\u89e3\u62a5\u544a<\/li>\n<li>\n<ul>\n<li>\u65b9\u6cd5\u4e00&#xff1a;<\/li>\n<li>\n<ul>\n<li>1.\u601d\u8def\u5206\u6790<\/li>\n<li>2.\u65f6\u95f4\u590d\u6742\u5ea6<\/li>\n<li>3.\u4ee3\u7801\u8be6\u89e3<\/li>\n<\/ul>\n<\/li>\n<li>\u65b9\u6cd5\u4e8c&#xff1a;<\/li>\n<li>\n<ul>\n<li>1.\u601d\u8def\u5206\u6790<\/li>\n<li>2.\u65f6\u95f4\u590d\u6742\u5ea6<\/li>\n<li>3.\u4ee3\u7801\u8be6\u89e3<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2>\u4e00\u3001\u9898\u76ee<\/h2>\n<h3>1.\u9898\u76ee\u63cf\u8ff0<\/h3>\n<p>\u7ed9\u4f60\u5355\u94fe\u8868\u7684\u5934\u8282\u70b9 head &#xff0c;\u8bf7\u4f60\u53cd\u8f6c\u94fe\u8868&#xff0c;\u5e76\u8fd4\u56de\u53cd\u8f6c\u540e\u7684\u94fe\u8868\u3002 \u793a\u4f8b\u4e00&#xff1a; \u8f93\u5165&#xff1a;head &#061; [1,2,3,4,5] \u8f93\u51fa&#xff1a;[5,4,3,2,1] \u793a\u4f8b\u4e8c&#xff1a; \u8f93\u5165&#xff1a;head &#061; [1,2] \u8f93\u51fa&#xff1a;[2,1] \u793a\u4f8b\u4e09&#xff1a; \u8f93\u5165&#xff1a;head &#061; [] \u8f93\u51fa&#xff1a;[]<\/p>\n<h3>2.\u9898\u76ee\u94fe\u63a5<\/h3>\n<p>https:\/\/leetcode.cn\/problems\/reverse-linked-list<\/p>\n<h2>\u4e8c\u3001\u9898\u89e3\u62a5\u544a<\/h2>\n<h3>\u65b9\u6cd5\u4e00&#xff1a;<\/h3>\n<h4>1.\u601d\u8def\u5206\u6790<\/h4>\n<p>\u7b80\u5355\u7406\u89e3&#xff1a;\u6bd4\u5982\u94fe\u8868\u4e3a 1\u21922\u21923\u3002\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u7a7a\u94fe\u8868&#xff0c;\u7136\u540e\u7528\u5934\u63d2\u6cd5\u4f9d\u6b21\u628a\u8282\u70b9 1,2,3 \u63d2\u5230\u8fd9\u4e2a\u65b0\u94fe\u8868\u7684\u5934\u90e8&#xff0c;\u5c31\u5f97\u5230\u4e86\u94fe\u8868 3\u21922\u21921&#xff0c;\u8fd9\u6b63\u662f\u53cd\u8f6c\u540e\u7684\u94fe\u8868\u3002<\/p>\n<p>\u5934\u63d2\u6cd5\u7684\u610f\u601d\u662f&#xff0c;\u628a\u4e00\u4e2a\u6307\u9488 newHead \u6307\u5411\u94fe\u8868\u5934\u8282\u70b9&#xff0c;\u5c06\u65b0\u63d2\u5165\u7684\u7ed3\u70b9\u63d2\u5728\u5934\u7ed3\u70b9\u7684\u524d\u9762&#xff0c;\u65b0\u63d2\u5165\u7684\u7ed3\u70b9\u7684\u6307\u5411\u66f4\u65b0\u4e3a\u539f\u6765\u7684\u5934\u7ed3\u70b9\u7684\u5730\u5740&#xff0c;newHead\u5c31\u4f1a\u6307\u5411\u65b0\u63d2\u5165\u7684\u7ed3\u70b9&#xff0c;\u65b0\u94fe\u8868\u7684\u5934\u8282\u70b9\u4e3a newHead\u3002<\/p>\n<p>\u5bf9\u4e8e\u94fe\u8868 1\u21922\u21923&#xff0c;\u7ed3\u5408\u4ee3\u7801\u6765\u8bf4&#xff0c;\u987a\u5e8f\u4e3a&#xff1a;<\/p>\n<p>\u7b2c\u4e00\u8f6e\u5faa\u73af\u7ed3\u675f\u540e&#xff0c;\u5f97\u5230\u94fe\u8868 1\u3002 \u7b2c\u4e8c\u8f6e\u5faa\u73af\u7ed3\u675f\u540e&#xff0c;\u5f97\u5230\u94fe\u8868 2\u21921\u3002 \u7b2c\u4e09\u8f6e\u5faa\u73af\u7ed3\u675f\u540e&#xff0c;\u5f97\u5230\u94fe\u8868 3\u21922\u21921\u3002<\/p>\n<p>\u6ce8&#xff1a;\u4ee3\u7801\u6bcf\u8f6e\u5faa\u73af\u7ed3\u675f\u540e&#xff0c;newHead \u8868\u793a\u6700\u65b0\u5f97\u5230\u7684\u94fe\u8868\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/10\/20261005153304-6ac3c330d68b7.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h4>2.\u65f6\u95f4\u590d\u6742\u5ea6<\/h4>\n<p>\u2003\u65f6\u95f4\u590d\u6742\u5ea6\u4e3aO(n)\u3002<\/p>\n<h4>3.\u4ee3\u7801\u8be6\u89e3<\/h4>\n<p><span class=\"token comment\">\/**<br \/>\n * Definition for singly-linked list.<br \/>\n * struct ListNode {<br \/>\n *     int val;<br \/>\n *     struct ListNode *next;<br \/>\n * };<br \/>\n *\/<\/span><br \/>\n<span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">ListNode<\/span><span class=\"token operator\">*<\/span> <span class=\"token function\">reverseList<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">ListNode<\/span><span class=\"token operator\">*<\/span> head<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">ListNode<\/span><span class=\"token operator\">*<\/span> newHead <span class=\"token operator\">&#061;<\/span> <span class=\"token constant\">NULL<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token operator\">*<\/span>cur <span class=\"token operator\">&#061;<\/span> head<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span>cur<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/\u4fdd\u5b58\u4e0b\u4e00\u4e2a\u7ed3\u70b9<\/span><br \/>\n        <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">ListNode<\/span><span class=\"token operator\">*<\/span> next <span class=\"token operator\">&#061;<\/span> cur<span class=\"token operator\">-&gt;<\/span>next<span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token comment\">\/\/\u5934\u63d2<\/span><br \/>\n        cur<span class=\"token operator\">-&gt;<\/span>next <span class=\"token operator\">&#061;<\/span> newHead<span class=\"token punctuation\">;<\/span><br \/>\n        newHead <span class=\"token operator\">&#061;<\/span> cur<span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token comment\">\/\/\u518d\u53d6\u4e0b\u4e00\u4e2a<\/span><br \/>\n        cur <span class=\"token operator\">&#061;<\/span> next<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token keyword\">return<\/span> newHead<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h3>\u65b9\u6cd5\u4e8c&#xff1a;<\/h3>\n<h4>1.\u601d\u8def\u5206\u6790<\/h4>\n<p>\u904d\u5386\u6bcf\u4e00\u4e2a\u7ed3\u70b9&#xff0c;\u5c06\u6bcf\u4e2a\u7ed3\u70b9\u7684\u6307\u5411\u90fd\u8c03\u8f6c\u65b9\u5411\u3002\u56e0\u6b64\u9700\u8981\u4e09\u4e2a\u6307\u9488&#xff0c;pre\u521d\u59cb\u4e3aNULL,\u7528\u6765\u66f4\u65b0\u4e0b\u4e00\u4e2a\u7ed3\u70b9&#xff08;cur)\u7684\u76ee\u6807\u6307\u5411&#xff1b;cur\u662f\u8981\u8c03\u8f6c\u65b9\u5411\u7684\u7ed3\u70b9&#xff0c;\u8981\u5c06cur\u6307\u5411\u4e4b\u524d\u7684\u7ed3\u70b9&#xff08;pre&#xff09;&#xff0c;cur-&gt;next &#061; pre;next\u7528\u6765\u66f4\u65b0cur&#xff0c;\u904d\u5386\u4e0b\u4e00\u4e2a\u7ed3\u70b9\u3002<\/p>\n<h4>2.\u65f6\u95f4\u590d\u6742\u5ea6<\/h4>\n<p>\u2003\u65f6\u95f4\u590d\u6742\u5ea6\u4e3aO(n)\u3002<\/p>\n<h4>3.\u4ee3\u7801\u8be6\u89e3<\/h4>\n<p><span class=\"token comment\">\/**<br \/>\n * Definition for singly-linked list.<br \/>\n * struct ListNode {<br \/>\n *     int val;<br \/>\n *     struct ListNode *next;<br \/>\n * };<br \/>\n *\/<\/span><br \/>\n<span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">ListNode<\/span><span class=\"token operator\">*<\/span> <span class=\"token function\">reverseList<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">ListNode<\/span><span class=\"token operator\">*<\/span> head<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">ListNode<\/span><span class=\"token operator\">*<\/span> pre <span class=\"token operator\">&#061;<\/span> <span class=\"token constant\">NULL<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token operator\">*<\/span>cur <span class=\"token operator\">&#061;<\/span> head<span class=\"token punctuation\">,<\/span> <span class=\"token operator\">*<\/span>next <span class=\"token operator\">&#061;<\/span> <span class=\"token constant\">NULL<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span>cur<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/\u4fdd\u5b58\u4e0b\u4e00\u4e2a&#xff0c;\u7528\u6765\u66f4\u65b0cur<\/span><br \/>\n        next <span class=\"token operator\">&#061;<\/span> cur<span class=\"token operator\">-&gt;<\/span>next<span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token comment\">\/\/\u8c03\u8f6c\u6307\u5411<\/span><br \/>\n        cur<span class=\"token operator\">-&gt;<\/span>next <span class=\"token operator\">&#061;<\/span> pre<span class=\"token punctuation\">;<\/span><br \/>\n        pre <span class=\"token operator\">&#061;<\/span> cur<span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token comment\">\/\/\u66f4\u65b0cur<\/span><br \/>\n        cur <span class=\"token operator\">&#061;<\/span> next<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> pre<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6587\u7ae0\u76ee\u5f55\u4e00\u3001\u9898\u76ee1.\u9898\u76ee\u63cf\u8ff02.\u9898\u76ee\u94fe\u63a5\u4e8c\u3001\u9898\u89e3\u62a5\u544a\u65b9\u6cd5\u4e00&#xff1a;1.\u601d\u8def\u5206\u67902.\u65f6\u95f4\u590d\u6742\u5ea63.\u4ee3\u7801\u8be6\u89e3\u65b9\u6cd5\u4e8c&#xff1a;1.\u601d\u8def\u5206\u67902.\u65f6\u95f4\u590d\u6742\u5ea63.\u4ee3\u7801\u8be6\u89e3\u4e00\u3001\u9898\u76ee<br \/>\n1.\u9898\u76ee\u63cf\u8ff0 \u7ed9\u4f60\u5355\u94fe\u8868\u7684\u5934\u8282\u70b9 head &#xff0c;\u8bf7\u4f60\u53cd\u8f6c\u94fe\u8868&#xff0c;\u5e76\u8fd4\u56de\u53cd\u8f6c\u540e\u7684\u94fe\u8868\u3002 \u793a\u4f8b\u4e00&#xff1a; \u8f93\u5165&#xff1a;head  [1,2,3,4,5] \u8f93\u51fa&#xff1a;[5,4,3,2,1] \u793a\u4f8b\u4e8c&#xff1a; \u8f93\u5165&#xff1a;head  [1,<\/p>\n","protected":false},"author":2,"featured_media":113310,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[11653,2692,427,2640],"topic":[],"class_list":["post-113311","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-11653","tag-leetcode","tag-427","tag-2640"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u5355\u94fe\u8868_LeetCode_276.\u53cd\u8f6c\u94fe\u8868 - 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