{"id":539,"date":"2020-09-26T10:53:32","date_gmt":"2020-09-26T02:53:32","guid":{"rendered":"http:\/\/39.96.58.60\/?p=539"},"modified":"2022-10-18T16:38:54","modified_gmt":"2022-10-18T08:38:54","slug":"leetcode-876-%e9%93%be%e8%a1%a8%e7%9a%84%e4%b8%ad%e9%97%b4%e7%bb%93%e7%82%b9","status":"publish","type":"post","link":"http:\/\/www.yatenglg.cn\/blog\/?p=539","title":{"rendered":"Leetcode 876. \u94fe\u8868\u7684\u4e2d\u95f4\u7ed3\u70b9"},"content":{"rendered":"<p>\u7ed9\u5b9a\u4e00\u4e2a\u5e26\u6709\u5934\u7ed3\u70b9&nbsp;<code>head<\/code>&nbsp;\u7684\u975e\u7a7a\u5355\u94fe\u8868\uff0c\u8fd4\u56de\u94fe\u8868\u7684\u4e2d\u95f4\u7ed3\u70b9\u3002<\/p>\n<p>\u5982\u679c\u6709\u4e24\u4e2a\u4e2d\u95f4\u7ed3\u70b9\uff0c\u5219\u8fd4\u56de\u7b2c\u4e8c\u4e2a\u4e2d\u95f4\u7ed3\u70b9\u3002<\/p>\n<p>&nbsp;<\/p>\n<p><strong>\u793a\u4f8b 1\uff1a<\/strong><\/p>\n<pre><strong>\u8f93\u5165\uff1a<\/strong>[1,2,3,4,5]\n\n<strong>\u8f93\u51fa\uff1a<\/strong>\u6b64\u5217\u8868\u4e2d\u7684\u7ed3\u70b9 3 (\u5e8f\u5217\u5316\u5f62\u5f0f\uff1a[3,4,5])\n\n\u8fd4\u56de\u7684\u7ed3\u70b9\u503c\u4e3a 3 \u3002 (\u6d4b\u8bc4\u7cfb\u7edf\u5bf9\u8be5\u7ed3\u70b9\u5e8f\u5217\u5316\u8868\u8ff0\u662f [3,4,5])\u3002\n\n\u6ce8\u610f\uff0c\u6211\u4eec\u8fd4\u56de\u4e86\u4e00\u4e2a ListNode \u7c7b\u578b\u7684\u5bf9\u8c61 ans\uff0c\u8fd9\u6837\uff1a\n\nans.val = 3, ans.next.val = 4, ans.next.next.val = 5, \u4ee5\u53ca ans.next.next.next = NULL.\n\n<\/pre>\n<p><strong>\u793a\u4f8b&nbsp;2\uff1a<\/strong><\/p>\n<pre><strong>\u8f93\u5165\uff1a<\/strong>[1,2,3,4,5,6]\n\n<strong>\u8f93\u51fa\uff1a<\/strong>\u6b64\u5217\u8868\u4e2d\u7684\u7ed3\u70b9 4 (\u5e8f\u5217\u5316\u5f62\u5f0f\uff1a[4,5,6])\n\n\u7531\u4e8e\u8be5\u5217\u8868\u6709\u4e24\u4e2a\u4e2d\u95f4\u7ed3\u70b9\uff0c\u503c\u5206\u522b\u4e3a 3 \u548c 4\uff0c\u6211\u4eec\u8fd4\u56de\u7b2c\u4e8c\u4e2a\u7ed3\u70b9\u3002\n\n<\/pre>\n<p>&nbsp;<\/p>\n<p><strong>\u63d0\u793a\uff1a<\/strong><\/p>\n<ul>\n<li>\u7ed9\u5b9a\u94fe\u8868\u7684\u7ed3\u70b9\u6570\u4ecb\u4e8e&nbsp;<code>1<\/code>&nbsp;\u548c&nbsp;<code>100<\/code>&nbsp;\u4e4b\u95f4\u3002<\/li>\n<\/ul>\n<p>**\u96be\u5ea6**: Easy<\/p>\n<p>**\u6807\u7b7e**: \u94fe\u8868\u3001<\/p>\n<div class=\"hcb_wrap\">\n<pre class=\"prism undefined-numbers lang-python\" data-lang=\"Python\"><code>\n# -*- coding: utf-8 -*-\n# @Author  : LG\n\n\"\"\"\n\u6267\u884c\u7528\u65f6\uff1a32 ms, \u5728\u6240\u6709 Python3 \u63d0\u4ea4\u4e2d\u51fb\u8d25\u4e8694.94% \u7684\u7528\u6237\n\u5185\u5b58\u6d88\u8017\uff1a13.6 MB, \u5728\u6240\u6709 Python3 \u63d0\u4ea4\u4e2d\u51fb\u8d25\u4e865.29% \u7684\u7528\u6237\n\n\u89e3\u9898\u601d\u8def\uff1a\n    \u5feb\u6162\u6307\u9488\n\"\"\"\nclass Solution:\n    def middleNode(self, head: ListNode) -&gt; ListNode:\n        s, f = head, head   # \u5feb\u6162\u6307\u9488\n        while f and f.next:\n            s = s.next\n            f = f.next.next\n        return s<\/code><\/pre>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u7ed9\u5b9a\u4e00\u4e2a\u5e26\u6709\u5934\u7ed3\u70b9&nbsp;head&nbsp;\u7684\u975e\u7a7a\u5355\u94fe\u8868\uff0c\u8fd4\u56de\u94fe\u8868\u7684\u4e2d\u95f4\u7ed3\u70b9\u3002 \u5982\u679c\u6709\u4e24\u4e2a\u4e2d\u95f4\u7ed3\u70b9\uff0c\u5219\u8fd4&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":[],"categories":[11,1],"tags":[],"_links":{"self":[{"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=\/wp\/v2\/posts\/539"}],"collection":[{"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=539"}],"version-history":[{"count":1,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=\/wp\/v2\/posts\/539\/revisions"}],"predecessor-version":[{"id":540,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=\/wp\/v2\/posts\/539\/revisions\/540"}],"wp:attachment":[{"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=539"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=539"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=539"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}