{"id":579,"date":"2020-09-26T10:59:42","date_gmt":"2020-09-26T02:59:42","guid":{"rendered":"http:\/\/39.96.58.60\/?p=579"},"modified":"2022-10-18T16:38:45","modified_gmt":"2022-10-18T08:38:45","slug":"leetcode-86-%e5%88%86%e9%9a%94%e9%93%be%e8%a1%a8","status":"publish","type":"post","link":"http:\/\/www.yatenglg.cn\/blog\/?p=579","title":{"rendered":"Leetcode 86. \u5206\u9694\u94fe\u8868"},"content":{"rendered":"<p>\u7ed9\u5b9a\u4e00\u4e2a\u94fe\u8868\u548c\u4e00\u4e2a\u7279\u5b9a\u503c<em> x<\/em>\uff0c\u5bf9\u94fe\u8868\u8fdb\u884c\u5206\u9694\uff0c\u4f7f\u5f97\u6240\u6709\u5c0f\u4e8e <em>x<\/em> \u7684\u8282\u70b9\u90fd\u5728\u5927\u4e8e\u6216\u7b49\u4e8e <em>x<\/em> \u7684\u8282\u70b9\u4e4b\u524d\u3002<\/p>\n<p>\u4f60\u5e94\u5f53\u4fdd\u7559\u4e24\u4e2a\u5206\u533a\u4e2d\u6bcf\u4e2a\u8282\u70b9\u7684\u521d\u59cb\u76f8\u5bf9\u4f4d\u7f6e\u3002<\/p>\n<p>&nbsp;<\/p>\n<p><strong>\u793a\u4f8b:<\/strong><\/p>\n<pre><strong>\u8f93\u5165:<\/strong> head = 1-&gt;4-&gt;3-&gt;2-&gt;5-&gt;2, <em>x<\/em> = 3\n\n<strong>\u8f93\u51fa:<\/strong> 1-&gt;2-&gt;2-&gt;4-&gt;3-&gt;5\n\n<\/pre>\n<p>**\u96be\u5ea6**: Medium<\/p>\n<p>**\u6807\u7b7e**: \u94fe\u8868\u3001 \u53cc\u6307\u9488\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\uff1a40 ms, \u5728\u6240\u6709 Python3 \u63d0\u4ea4\u4e2d\u51fb\u8d25\u4e8688.07% \u7684\u7528\u6237\n\u5185\u5b58\u6d88\u8017\uff1a13.4 MB, \u5728\u6240\u6709 Python3 \u63d0\u4ea4\u4e2d\u51fb\u8d25\u4e8642.98% \u7684\u7528\u6237\n\n\u89e3\u9898\u601d\u8def\uff1a\n    \u53cc\u6307\u9488\n    p\u6307\u9488\u7528\u4e8e\u8bb0\u5f55\u4f4d\u7f6e\uff0cq\u6307\u9488\u5bfb\u627e\u5c0f\u4e8ex\u7684\u8282\u70b9\u3002\n    q\u6307\u9488\u627e\u5230<x\u7684\u8282\u70b9\u540e\uff0c\u4ea4\u6362\u94fe\u8868 \"\"\"=\"\" class=\"\" solution:=\"\" def=\"\" partition(self,=\"\" head:=\"\" listnode,=\"\" x:=\"\" int)=\"\" -=\"\"> ListNode:\n        p, q = ListNode(0, next = head), head   # p\u6307\u9488\u7528\u4e8e\u8bb0\u5f55\u4f4d\u7f6e\uff0cq\u6307\u9488\u7528\u4e8e\u5bfb\u627e<x\u7684\u8282\u70b9\u3002\u4e3a\u4fbf\u4e8e\u4ea4\u6362\u94fe\u8868\uff0c\u5bfb\u627e\u65f6\uff0c\u5747\u4f7f\u7528\u6307\u9488\u7684next\u6765\u5224\u65ad\u8282\u70b9 start=\"p\" while=\"\" p=\"\" and=\"\" p.next=\"\" p.next.val=\"\" <=\"\" x:=\"\" #=\"\" \u5148\u79fb\u52a8p\u6307\u9488\uff0c\u76f4\u5230p\u7684\u4e0b\u4e00\u4e2a\u8282\u70b9\u503c\u5927\u4e8ex=\"\" q=\"p.next\" q.next:=\"\" if=\"\" q.next.val=\"\" \u5982\u679cq\u6307\u9488\u6307\u5411\u7684\u4e0b\u4e00\u4e2a\u8282\u70b9\u503c\u5c0f\u4e8ex,=\"\" \u5219\u4ea4\u6362\u94fe\u8868=\"\" p_next=\"p.next\" q_next_next=\"q.next.next\" q.next.next=\"p_next\" q.next=\"q_next_next\" \u4ea4\u6362\u94fe\u8868\u540e\uff0cp\u6307\u9488\u5411\u540e\u79fb\u52a8\u4e00\u4f4d=\"\" else:=\"\" q\u6307\u9488\u6307\u5411\u7684\u4e0b\u4e00\u4e2a\u8282\u70b9\u503c=\"\">=x\uff0c\u5219\u79fb\u52a8q\u6307\u9488\u5bfb\u627e\u5c0f\u4e8ex\u7684\u8282\u70b9\n                q = q.next\n\n        return start.next<\/x\u7684\u8282\u70b9\u3002\u4e3a\u4fbf\u4e8e\u4ea4\u6362\u94fe\u8868\uff0c\u5bfb\u627e\u65f6\uff0c\u5747\u4f7f\u7528\u6307\u9488\u7684next\u6765\u5224\u65ad\u8282\u70b9><\/x\u7684\u8282\u70b9\u540e\uff0c\u4ea4\u6362\u94fe\u8868><\/code><\/pre>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u7ed9\u5b9a\u4e00\u4e2a\u94fe\u8868\u548c\u4e00\u4e2a\u7279\u5b9a\u503c x\uff0c\u5bf9\u94fe\u8868\u8fdb\u884c\u5206\u9694\uff0c\u4f7f\u5f97\u6240\u6709\u5c0f\u4e8e x \u7684\u8282\u70b9\u90fd\u5728\u5927\u4e8e\u6216\u7b49\u4e8e x \u7684\u8282\u70b9\u4e4b\u524d\u3002 \u4f60\u5e94\u5f53&#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\/579"}],"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=579"}],"version-history":[{"count":1,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=\/wp\/v2\/posts\/579\/revisions"}],"predecessor-version":[{"id":580,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=\/wp\/v2\/posts\/579\/revisions\/580"}],"wp:attachment":[{"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=579"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=579"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=579"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}