{"id":68711,"date":"2026-01-30T15:25:11","date_gmt":"2026-01-30T07:25:11","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/68711.html"},"modified":"2026-01-30T15:25:11","modified_gmt":"2026-01-30T07:25:11","slug":"%e3%80%90c%e8%af%ad%e8%a8%80%e8%bf%9b%e9%98%b6%e6%95%b0%e6%8d%ae%e7%bb%93%e6%9e%84%e4%b8%8e%e7%ae%97%e6%b3%95%e3%80%91%e5%8d%95%e9%93%be%e8%a1%a8%e7%bb%bc%e5%90%88%e7%bb%83%e4%b9%a0%ef%bc%9a1","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/68711.html","title":{"rendered":"\u3010C\u8bed\u8a00\u8fdb\u9636\u6570\u636e\u7ed3\u6784\u4e0e\u7b97\u6cd5\u3011\u5355\u94fe\u8868\u7efc\u5408\u7ec3\u4e60\uff1a1.\u5220\u9664\u94fe\u8868\u4e2d\u7b49\u4e8e\u7ed9\u5b9a\u503c val \u7684\u6240\u6709\u8282\u70b9 2.\u53cd\u8f6c\u94fe\u8868 3.\u94fe\u8868\u4e2d\u95f4\u8282\u70b9"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/01\/20260130072504-697c5cd047b61.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<p>&#x1f525;\u5c0f\u9f99\u62a5&#xff1a;\u4e2a\u4eba\u4e3b\u9875 &#x1f3ac;\u4f5c\u8005\u7b80\u4ecb&#xff1a;C&#043;&#043;\u7814\u53d1&#xff0c;\u5d4c\u5165\u5f0f&#xff0c;\u673a\u5668\u4eba\u7b49\u65b9\u5411\u5b66\u4e60\u8005 \u2744\ufe0f\u4e2a\u4eba\u4e13\u680f&#xff1a;\u300aC\u8bed\u8a00\u300b\u300a\u3010\u521d\u9636\u3011\u6570\u636e\u7ed3\u6784\u4e0e\u7b97\u6cd5\u300b <font color=\"red\" size=\"3\">\u2728 \u6c38\u8fdc\u76f8\u4fe1\u7f8e\u597d\u7684\u4e8b\u60c5\u5373\u5c06\u53d1\u751f<\/font><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/01\/20260130072504-697c5cd072655.gif\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<\/p>\n<h4>\u6587\u7ae0\u76ee\u5f55<\/h4>\n<ul>\n<li>\u524d\u8a00<\/li>\n<li>\u4e00\u3001\u5220\u9664\u94fe\u8868\u4e2d\u7b49\u4e8e\u7ed9\u5b9a\u503c val \u7684\u6240\u6709\u8282\u70b9<\/li>\n<li>\n<ul>\n<li>1.1\u9898\u76ee<\/li>\n<li>1.2 \u7b97\u6cd5\u539f\u7406<\/li>\n<li>1.3\u4ee3\u7801<\/li>\n<\/ul>\n<\/li>\n<li>\u4e8c\u3001\u53cd\u8f6c\u94fe\u8868<\/li>\n<li>\n<ul>\n<li>2.1\u9898\u76ee<\/li>\n<li>2.2 \u7b97\u6cd5\u539f\u7406<\/li>\n<li>2.3\u4ee3\u7801<\/li>\n<\/ul>\n<\/li>\n<li>\u4e09\u3001\u94fe\u8868\u4e2d\u95f4\u8282\u70b9<\/li>\n<li>\n<ul>\n<li>3.1\u9898\u76ee<\/li>\n<li>3.2 \u7b97\u6cd5\u539f\u7406<\/li>\n<li>3.3\u4ee3\u7801<\/li>\n<\/ul>\n<\/li>\n<li>\u603b\u7ed3\u4e0e\u6bcf\u65e5\u52b1\u5fd7<\/li>\n<\/ul>\n<hr \/>\n<h2>\u524d\u8a00<\/h2>\n<p>\u94fe\u8868\u662f C \u8bed\u8a00\u548c\u6570\u636e\u7ed3\u6784\u5b66\u4e60\u7684\u6838\u5fc3\u8003\u70b9&#xff0c;\u4e5f\u662f\u7f16\u7a0b\u5165\u95e8\u7ed5\u4e0d\u5f00\u7684\u7ecf\u5178\u9898\u578b\u3002\u672c\u6587\u805a\u7126\u5220\u9664\u6307\u5b9a\u503c\u8282\u70b9\u3001\u53cd\u8f6c\u94fe\u8868\u3001\u67e5\u627e\u4e2d\u95f4\u8282\u70b9\u4e09\u5927\u9ad8\u9891\u94fe\u8868\u9898&#xff0c;\u4ece\u7b97\u6cd5\u539f\u7406\u5230\u4ee3\u7801\u5b9e\u73b0\u9010\u62c6\u89e3&#xff0c;\u7528\u901a\u4fd7\u6613\u61c2\u7684\u903b\u8f91\u548c\u6e05\u6670\u7684\u4ee3\u7801\u793a\u4f8b&#xff0c;\u5e2e\u4f60\u5403\u900f\u94fe\u8868\u64cd\u4f5c\u7684\u6838\u5fc3\u601d\u8def\u3002\u638c\u63e1\u8fd9\u4e9b\u57fa\u7840\u9898\u578b&#xff0c;\u4e0d\u4ec5\u80fd\u592f\u5b9e\u6307\u9488\u529f\u5e95&#xff0c;\u66f4\u80fd\u4e3a\u540e\u7eed\u590d\u6742\u6570\u636e\u7ed3\u6784\u5b66\u4e60\u7b51\u7262\u6839\u57fa\u3002<\/p>\n<h2>\u4e00\u3001\u5220\u9664\u94fe\u8868\u4e2d\u7b49\u4e8e\u7ed9\u5b9a\u503c val \u7684\u6240\u6709\u8282\u70b9<\/h2>\n<h3>1.1\u9898\u76ee<\/h3>\n<p>\u94fe\u63a5&#xff1a;\u5220\u9664\u94fe\u8868\u4e2d\u7b49\u4e8e\u7ed9\u5b9a\u503c val \u7684\u6240\u6709\u8282\u70b9 <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/01\/20260130072504-697c5cd0cb496.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h3>1.2 \u7b97\u6cd5\u539f\u7406<\/h3>\n<p>\u521b\u5efa\u4e00\u4e2a\u65b0\u94fe\u8868&#xff0c;\u904d\u5386\u539f\u94fe\u8868&#xff0c;\u628a\u4e0d\u7b49\u4e8eval\u503c\u5c3e\u63d2\u5230\u65b0\u94fe\u8868\u4e2d\u6700\u540e\u8fd4\u56de\u65b0\u94fe\u8868<\/p>\n<h3>1.3\u4ee3\u7801<\/h3>\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 \/>\ntypedef <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">ListNode<\/span> ListNode<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> <span class=\"token function\">removeElements<\/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 class-name\"><span class=\"token keyword\">int<\/span><\/span> val<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><\/p>\n<p>   ListNode<span class=\"token operator\">*<\/span> newhead <span class=\"token operator\">&#061;<\/span> NULL<span class=\"token punctuation\">;<\/span><br \/>\n   ListNode<span class=\"token operator\">*<\/span> newtail <span class=\"token operator\">&#061;<\/span> NULL<span class=\"token punctuation\">;<\/span><br \/>\n   ListNode<span class=\"token operator\">*<\/span> pcur <span class=\"token operator\">&#061;<\/span> head<span class=\"token punctuation\">;<\/span><\/p>\n<p>   <span class=\"token keyword\">while<\/span><span class=\"token punctuation\">(<\/span>pcur<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>pcur<span class=\"token operator\">-&gt;<\/span>val <span class=\"token operator\">!&#061;<\/span> val<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>newhead <span class=\"token operator\">&#061;&#061;<\/span> NULL<span class=\"token punctuation\">)<\/span> <span class=\"token comment\">\/\/\u94fe\u8868\u4e3a\u7a7a<\/span><br \/>\n               newhead <span class=\"token operator\">&#061;<\/span> newtail <span class=\"token operator\">&#061;<\/span> pcur<span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token keyword\">else<\/span><br \/>\n            <span class=\"token punctuation\">{<\/span><br \/>\n                newtail<span class=\"token operator\">-&gt;<\/span>next <span class=\"token operator\">&#061;<\/span>  pcur<span class=\"token punctuation\">;<\/span><br \/>\n                newtail <span class=\"token operator\">&#061;<\/span> pcur<span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><br \/>\n       <span class=\"token punctuation\">}<\/span><br \/>\n       pcur <span class=\"token operator\">&#061;<\/span> pcur<span class=\"token operator\">-&gt;<\/span>next<span class=\"token punctuation\">;<\/span><br \/>\n   <span class=\"token punctuation\">}<\/span><br \/>\n   <span class=\"token keyword\">if<\/span><span class=\"token punctuation\">(<\/span>newtail<span class=\"token punctuation\">)<\/span><br \/>\n      newtail<span class=\"token operator\">-&gt;<\/span>next <span class=\"token operator\">&#061;<\/span> NULL<span class=\"token punctuation\">;<\/span><br \/>\n   <span class=\"token keyword\">return<\/span> newhead<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h2>\u4e8c\u3001\u53cd\u8f6c\u94fe\u8868<\/h2>\n<h3>2.1\u9898\u76ee<\/h3>\n<p>\u94fe\u63a5&#xff1a;\u53cd\u8f6c\u94fe\u8868 <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/01\/20260130072505-697c5cd1756af.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h3>2.2 \u7b97\u6cd5\u539f\u7406<\/h3>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/01\/20260130072506-697c5cd21e1b2.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> \u6ce81&#xff1a;n3\u4f1a\u6700\u5148\u6307\u5411NULL\u6240\u4ee5\u8981\u7279\u5224&#xff1b; \u6ce82&#xff1a;\u94fe\u8868\u53ef\u80fd\u4e3a\u7a7a&#xff0c;\u4e3a\u7a7a\u76f4\u63a5\u8fd4\u56de&#xff1b;<\/p>\n<h3>2.3\u4ee3\u7801<\/h3>\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 typedef <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">ListNode<\/span> ListNode<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> <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><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token comment\">\/\/\u94fe\u8868 \u4e3a\u7a7a<\/span><br \/>\n    <span class=\"token keyword\">if<\/span><span class=\"token punctuation\">(<\/span>head <span class=\"token operator\">&#061;&#061;<\/span> NULL<span class=\"token punctuation\">)<\/span><br \/>\n       <span class=\"token keyword\">return<\/span> head<span class=\"token punctuation\">;<\/span><\/p>\n<p>   ListNode<span class=\"token operator\">*<\/span> n1 <span class=\"token operator\">&#061;<\/span> NULL<span class=\"token punctuation\">;<\/span><br \/>\n   ListNode<span class=\"token operator\">*<\/span> n2 <span class=\"token operator\">&#061;<\/span> head<span class=\"token punctuation\">;<\/span><br \/>\n   ListNode<span class=\"token operator\">*<\/span> n3 <span class=\"token operator\">&#061;<\/span> head<span class=\"token operator\">-&gt;<\/span>next<span class=\"token punctuation\">;<\/span><\/p>\n<p>   <span class=\"token keyword\">while<\/span><span class=\"token punctuation\">(<\/span>n2<span class=\"token punctuation\">)<\/span><br \/>\n   <span class=\"token punctuation\">{<\/span><br \/>\n       n2<span class=\"token operator\">-&gt;<\/span>next <span class=\"token operator\">&#061;<\/span> n1<span class=\"token punctuation\">;<\/span><br \/>\n       n1 <span class=\"token operator\">&#061;<\/span> n2<span class=\"token punctuation\">;<\/span><br \/>\n       n2 <span class=\"token operator\">&#061;<\/span> n3<span class=\"token punctuation\">;<\/span><br \/>\n       <span class=\"token keyword\">if<\/span><span class=\"token punctuation\">(<\/span>n3<span class=\"token punctuation\">)<\/span><br \/>\n          n3 <span class=\"token operator\">&#061;<\/span> n3<span class=\"token operator\">-&gt;<\/span>next<span class=\"token punctuation\">;<\/span><br \/>\n   <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> n1<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h2>\u4e09\u3001\u94fe\u8868\u4e2d\u95f4\u8282\u70b9<\/h2>\n<h3>3.1\u9898\u76ee<\/h3>\n<p>\u94fe\u63a5&#xff1a;\u94fe\u8868\u4e2d\u95f4\u8282\u70b9 <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/01\/20260130072506-697c5cd2ce7fc.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h3>3.2 \u7b97\u6cd5\u539f\u7406<\/h3>\n<p>\u6838\u5fc3\u601d\u60f3&#xff1a;\u5feb\u6162\u6307\u9488&#xff08;2*slow &#061;&#061; fast&#xff09;<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/01\/20260130072508-697c5cd442339.jpg\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> \u6ce8\u610f&#xff1a;\u4e0d\u80fdfast-&gt;next &amp;&amp; fast\u5f53\u9047\u5230\u5076\u6570\u94fe\u8868\u4f1a\u9020\u6210\u5bf9\u7a7a\u6307\u9488\u89e3\u5e94\u7528<\/p>\n<h3>3.3\u4ee3\u7801<\/h3>\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 \/>\ntypedef <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">ListNode<\/span> ListNode<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> <span class=\"token function\">middleNode<\/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><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    ListNode<span class=\"token operator\">*<\/span> slow <span class=\"token operator\">&#061;<\/span> head<span class=\"token punctuation\">;<\/span><br \/>\n    ListNode<span class=\"token operator\">*<\/span> fast <span class=\"token operator\">&#061;<\/span> head<span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">while<\/span><span class=\"token punctuation\">(<\/span>fast <span class=\"token operator\">&amp;&amp;<\/span> fast<span class=\"token operator\">-&gt;<\/span>next<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        slow <span class=\"token operator\">&#061;<\/span> slow<span class=\"token operator\">-&gt;<\/span>next<span class=\"token punctuation\">;<\/span><br \/>\n        fast <span class=\"token operator\">&#061;<\/span> fast<span class=\"token operator\">-&gt;<\/span>next<span class=\"token operator\">-&gt;<\/span>next<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> slow<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token punctuation\">}<\/span><\/p>\n<h2>\u603b\u7ed3\u4e0e\u6bcf\u65e5\u52b1\u5fd7<\/h2>\n<p><font color=\"red\" 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