{"id":75931,"date":"2026-02-13T14:26:28","date_gmt":"2026-02-13T06:26:28","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/75931.html"},"modified":"2026-02-13T14:26:28","modified_gmt":"2026-02-13T06:26:28","slug":"82-%e5%88%a0%e9%99%a4%e6%8e%92%e5%ba%8f%e9%93%be%e8%a1%a8%e4%b8%ad%e7%9a%84%e9%87%8d%e5%a4%8d%e5%85%83%e7%b4%a0-ii","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/75931.html","title":{"rendered":"82. \u5220\u9664\u6392\u5e8f\u94fe\u8868\u4e2d\u7684\u91cd\u590d\u5143\u7d20 II"},"content":{"rendered":"<p>\u95ee\u9898\u63cf\u8ff0&#xff1a;<\/p>\n<p>\u7ed9\u5b9a\u4e00\u4e2a\u5df2\u6392\u5e8f\u7684\u94fe\u8868\u7684\u5934\u00a0head &#xff0c;\u00a0\u5220\u9664\u539f\u59cb\u94fe\u8868\u4e2d\u6240\u6709\u91cd\u590d\u6570\u5b57\u7684\u8282\u70b9&#xff0c;\u53ea\u7559\u4e0b\u4e0d\u540c\u7684\u6570\u5b57\u00a0\u3002\u8fd4\u56de \u5df2\u6392\u5e8f\u7684\u94fe\u8868\u00a0\u3002<\/p>\n<\/p>\n<p>\u793a\u4f8b 1&#xff1a;<\/p>\n<\/p>\n<p class=\"img-center\"><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"222\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260213062626-698ec412d51dc.jpg\" width=\"782\" \/><\/p>\n<p>\u8f93\u5165&#xff1a;head &#061; [1,2,3,3,4,4,5]<br \/>\n\u8f93\u51fa&#xff1a;[1,2,5]<\/p>\n<p>\u793a\u4f8b 2&#xff1a;<\/p>\n<\/p>\n<p class=\"img-center\"><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"222\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260213062627-698ec41302cc3.jpg\" width=\"542\" \/><\/p>\n<p>\u8f93\u5165&#xff1a;head &#061; [1,1,1,2,3]<br \/>\n\u8f93\u51fa&#xff1a;[2,3]<\/p>\n<p>\u63d0\u793a&#xff1a;<\/p>\n<ul>\n<li>\u94fe\u8868\u4e2d\u8282\u70b9\u6570\u76ee\u5728\u8303\u56f4 [0, 300] \u5185<\/li>\n<li>-100 &lt;&#061; Node.val &lt;&#061; 100<\/li>\n<li>\u9898\u76ee\u6570\u636e\u4fdd\u8bc1\u94fe\u8868\u5df2\u7ecf\u6309\u5347\u5e8f \u6392\u5217<\/li>\n<\/ul>\n<p>\u4e0a\u4ee3\u7801&#xff0c;\u62ff\u53bb\u5373\u53ef\u8fd0\u884c&#xff1a;<\/p>\n<p>package com.onlyqi.daydayup01.leetcode;<\/p>\n<p>import lombok.AllArgsConstructor;<br \/>\nimport lombok.Data;<\/p>\n<p>import java.util.Objects;<\/p>\n<p>public class Leetcode82 {<br \/>\n    public static void main(String[] args) {<\/p>\n<p>        ListNode head5 &#061; new ListNode(5);<br \/>\n        ListNode head41 &#061; new ListNode(4,head5);<br \/>\n        ListNode head4 &#061; new ListNode(4,head41);<br \/>\n        ListNode head3 &#061; new ListNode(3,head4);<br \/>\n        ListNode head21 &#061; new ListNode(3, head3);<br \/>\n        ListNode head2 &#061; new ListNode(2, head21);<br \/>\n        ListNode head1 &#061; new ListNode(1, head2);<br \/>\n        ListNode head &#061; deleteDuplicates(head1);<br \/>\n        while (!Objects.isNull(head)) {<br \/>\n            System.out.println(head.val);<br \/>\n            head &#061; head.next;<br \/>\n        }<\/p>\n<p>    }<\/p>\n<p>    public static ListNode deleteDuplicates(ListNode head) {<br \/>\n        if (head &#061;&#061; null || head.next &#061;&#061; null) {<br \/>\n            return head;<br \/>\n        }<br \/>\n        ListNode dummy &#061; new ListNode(0); \/\/ \u54d1\u7ed3\u70b9 (dummy node)&#xff0c;\u7b80\u5316\u4ee3\u7801<br \/>\n        dummy.next &#061; head;<\/p>\n<p>        ListNode prev &#061; dummy;<br \/>\n        ListNode curr &#061; head;<\/p>\n<p>        \/\/ 1  2   3    3   4    4   5<br \/>\n        while (curr !&#061; null) {<br \/>\n            if (curr.next !&#061; null &amp;&amp; curr.next.val &#061;&#061; curr.val) {<br \/>\n                int val &#061; curr.val;<br \/>\n                \/\/ \u5bfb\u627e\u6700\u540e\u4e00\u4e2a\u76f8\u7b49\u7684\u8282\u70b9<br \/>\n                while (curr !&#061; null &amp;&amp; curr.val &#061;&#061; val) {<br \/>\n                    curr &#061; curr.next;<br \/>\n                }<br \/>\n                prev.next &#061; curr;<br \/>\n            } else {<br \/>\n                prev &#061; curr;<br \/>\n                curr &#061; curr.next;<br \/>\n            }<br \/>\n        }<br \/>\n        return dummy.next;<br \/>\n    }<\/p>\n<p>    &#064;Data<br \/>\n    &#064;AllArgsConstructor<br \/>\n    static class ListNode {<br \/>\n        int val;<br \/>\n        ListNode next;<\/p>\n<p>        public ListNode(int val) {<br \/>\n            this.val &#061; val;<br \/>\n            this.next &#061; null;<br \/>\n        }<br \/>\n    }<br \/>\n}<\/p>\n<p>\u8fd0\u884c\u7ed3\u679c&#xff1a;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"258\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260213062627-698ec4131917d.png\" width=\"1209\" \/><\/p>\n<\/p>\n<p>\u6211\u8981\u5237300\u9053\u7b97\u6cd5\u9898&#xff0c;\u7b2c155\u9053\u00a0\u3002 \u5c3d\u5feb\u5237\u5230200&#xff0c;\u4e89\u53d6\u6bcf\u5929\u641e\u4e00\u9053\u00a0 \u3002\u00a0<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u95ee\u9898\u63cf\u8ff0&#xff1a;\u7ed9\u5b9a\u4e00\u4e2a\u5df2\u6392\u5e8f\u7684\u94fe\u8868\u7684\u5934\u00a0head &#xff0c;\u00a0\u5220\u9664\u539f\u59cb\u94fe\u8868\u4e2d\u6240\u6709\u91cd\u590d\u6570\u5b57\u7684\u8282\u70b9&#xff0c;\u53ea\u7559\u4e0b\u4e0d\u540c\u7684\u6570\u5b57\u00a0\u3002\u8fd4\u56de \u5df2\u6392\u5e8f\u7684\u94fe\u8868\u00a0\u3002\u793a\u4f8b 1&#xff1a;\u8f93\u5165&#xff1a;head  [1,2,3,3,4,4,5]<br \/>\n\u8f93\u51fa&#xff1a;[1,2,5]\u793a\u4f8b 2&#xff1a;\u8f93\u5165&#xff1a;head  [1,1,1,2,3]<br \/>\n\u8f93\u51fa&#xff1a;[2,3]\u63d0\u793a&#xff1a;\u94fe\u8868\u4e2d\u8282\u70b9\u6570\u76ee\u5728\u8303\u56f4 [0, 300] \u5185-100 &lt; No<\/p>\n","protected":false},"author":2,"featured_media":75928,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[1813,427,2640],"topic":[],"class_list":["post-75931","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-1813","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>82. \u5220\u9664\u6392\u5e8f\u94fe\u8868\u4e2d\u7684\u91cd\u590d\u5143\u7d20 II - \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\/75931.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"82. \u5220\u9664\u6392\u5e8f\u94fe\u8868\u4e2d\u7684\u91cd\u590d\u5143\u7d20 II - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"og:description\" content=\"\u95ee\u9898\u63cf\u8ff0&#xff1a;\u7ed9\u5b9a\u4e00\u4e2a\u5df2\u6392\u5e8f\u7684\u94fe\u8868\u7684\u5934\u00a0head &#xff0c;\u00a0\u5220\u9664\u539f\u59cb\u94fe\u8868\u4e2d\u6240\u6709\u91cd\u590d\u6570\u5b57\u7684\u8282\u70b9&#xff0c;\u53ea\u7559\u4e0b\u4e0d\u540c\u7684\u6570\u5b57\u00a0\u3002\u8fd4\u56de \u5df2\u6392\u5e8f\u7684\u94fe\u8868\u00a0\u3002\u793a\u4f8b 1&#xff1a;\u8f93\u5165&#xff1a;head [1,2,3,3,4,4,5] \u8f93\u51fa&#xff1a;[1,2,5]\u793a\u4f8b 2&#xff1a;\u8f93\u5165&#xff1a;head [1,1,1,2,3] \u8f93\u51fa&#xff1a;[2,3]\u63d0\u793a&#xff1a;\u94fe\u8868\u4e2d\u8282\u70b9\u6570\u76ee\u5728\u8303\u56f4 [0, 300] \u5185-100 &lt; No\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.wsisp.com\/helps\/75931.html\" \/>\n<meta property=\"og:site_name\" content=\"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"article:published_time\" content=\"2026-02-13T06:26:28+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260213062626-698ec412d51dc.jpg\" \/>\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=\"1 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/75931.html\",\"url\":\"https:\/\/www.wsisp.com\/helps\/75931.html\",\"name\":\"82. \u5220\u9664\u6392\u5e8f\u94fe\u8868\u4e2d\u7684\u91cd\u590d\u5143\u7d20 II - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\",\"isPartOf\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/#website\"},\"datePublished\":\"2026-02-13T06:26:28+00:00\",\"dateModified\":\"2026-02-13T06:26:28+00:00\",\"author\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41\"},\"breadcrumb\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/75931.html#breadcrumb\"},\"inLanguage\":\"zh-Hans\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.wsisp.com\/helps\/75931.html\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/75931.html#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"\u9996\u9875\",\"item\":\"https:\/\/www.wsisp.com\/helps\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"82. \u5220\u9664\u6392\u5e8f\u94fe\u8868\u4e2d\u7684\u91cd\u590d\u5143\u7d20 II\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/#website\",\"url\":\"https:\/\/www.wsisp.com\/helps\/\",\"name\":\"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\",\"description\":\"\u9999\u6e2f\u670d\u52a1\u5668_\u9999\u6e2f\u4e91\u670d\u52a1\u5668\u8d44\u8baf_\u670d\u52a1\u5668\u5e2e\u52a9\u6587\u6863_\u670d\u52a1\u5668\u6559\u7a0b\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.wsisp.com\/helps\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"zh-Hans\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41\",\"name\":\"admin\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"zh-Hans\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery\",\"contentUrl\":\"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery\",\"caption\":\"admin\"},\"sameAs\":[\"http:\/\/wp.wsisp.com\"],\"url\":\"https:\/\/www.wsisp.com\/helps\/author\/admin\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"82. \u5220\u9664\u6392\u5e8f\u94fe\u8868\u4e2d\u7684\u91cd\u590d\u5143\u7d20 II - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.wsisp.com\/helps\/75931.html","og_locale":"zh_CN","og_type":"article","og_title":"82. \u5220\u9664\u6392\u5e8f\u94fe\u8868\u4e2d\u7684\u91cd\u590d\u5143\u7d20 II - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","og_description":"\u95ee\u9898\u63cf\u8ff0&#xff1a;\u7ed9\u5b9a\u4e00\u4e2a\u5df2\u6392\u5e8f\u7684\u94fe\u8868\u7684\u5934\u00a0head &#xff0c;\u00a0\u5220\u9664\u539f\u59cb\u94fe\u8868\u4e2d\u6240\u6709\u91cd\u590d\u6570\u5b57\u7684\u8282\u70b9&#xff0c;\u53ea\u7559\u4e0b\u4e0d\u540c\u7684\u6570\u5b57\u00a0\u3002\u8fd4\u56de \u5df2\u6392\u5e8f\u7684\u94fe\u8868\u00a0\u3002\u793a\u4f8b 1&#xff1a;\u8f93\u5165&#xff1a;head [1,2,3,3,4,4,5] \u8f93\u51fa&#xff1a;[1,2,5]\u793a\u4f8b 2&#xff1a;\u8f93\u5165&#xff1a;head [1,1,1,2,3] \u8f93\u51fa&#xff1a;[2,3]\u63d0\u793a&#xff1a;\u94fe\u8868\u4e2d\u8282\u70b9\u6570\u76ee\u5728\u8303\u56f4 [0, 300] \u5185-100 &lt; No","og_url":"https:\/\/www.wsisp.com\/helps\/75931.html","og_site_name":"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","article_published_time":"2026-02-13T06:26:28+00:00","og_image":[{"url":"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260213062626-698ec412d51dc.jpg"}],"author":"admin","twitter_card":"summary_large_image","twitter_misc":{"\u4f5c\u8005":"admin","\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4":"1 \u5206"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.wsisp.com\/helps\/75931.html","url":"https:\/\/www.wsisp.com\/helps\/75931.html","name":"82. \u5220\u9664\u6392\u5e8f\u94fe\u8868\u4e2d\u7684\u91cd\u590d\u5143\u7d20 II - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","isPartOf":{"@id":"https:\/\/www.wsisp.com\/helps\/#website"},"datePublished":"2026-02-13T06:26:28+00:00","dateModified":"2026-02-13T06:26:28+00:00","author":{"@id":"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41"},"breadcrumb":{"@id":"https:\/\/www.wsisp.com\/helps\/75931.html#breadcrumb"},"inLanguage":"zh-Hans","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.wsisp.com\/helps\/75931.html"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.wsisp.com\/helps\/75931.html#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"\u9996\u9875","item":"https:\/\/www.wsisp.com\/helps"},{"@type":"ListItem","position":2,"name":"82. \u5220\u9664\u6392\u5e8f\u94fe\u8868\u4e2d\u7684\u91cd\u590d\u5143\u7d20 II"}]},{"@type":"WebSite","@id":"https:\/\/www.wsisp.com\/helps\/#website","url":"https:\/\/www.wsisp.com\/helps\/","name":"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","description":"\u9999\u6e2f\u670d\u52a1\u5668_\u9999\u6e2f\u4e91\u670d\u52a1\u5668\u8d44\u8baf_\u670d\u52a1\u5668\u5e2e\u52a9\u6587\u6863_\u670d\u52a1\u5668\u6559\u7a0b","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.wsisp.com\/helps\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"zh-Hans"},{"@type":"Person","@id":"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41","name":"admin","image":{"@type":"ImageObject","inLanguage":"zh-Hans","@id":"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/image\/","url":"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery","contentUrl":"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery","caption":"admin"},"sameAs":["http:\/\/wp.wsisp.com"],"url":"https:\/\/www.wsisp.com\/helps\/author\/admin"}]}},"_links":{"self":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/posts\/75931","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/comments?post=75931"}],"version-history":[{"count":0,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/posts\/75931\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/media\/75928"}],"wp:attachment":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/media?parent=75931"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/categories?post=75931"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/tags?post=75931"},{"taxonomy":"topic","embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/topic?post=75931"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}