{"id":647,"date":"2020-09-26T11:07:04","date_gmt":"2020-09-26T03:07:04","guid":{"rendered":"http:\/\/39.96.58.60\/?p=647"},"modified":"2022-10-18T16:38:24","modified_gmt":"2022-10-18T08:38:24","slug":"leetcode-92-%e5%8f%8d%e8%bd%ac%e9%93%be%e8%a1%a8-ii","status":"publish","type":"post","link":"http:\/\/www.yatenglg.cn\/blog\/?p=647","title":{"rendered":"Leetcode 92. \u53cd\u8f6c\u94fe\u8868 II"},"content":{"rendered":"<p>\u53cd\u8f6c\u4ece\u4f4d\u7f6e <em>m<\/em> \u5230 <em>n<\/em> \u7684\u94fe\u8868\u3002\u8bf7\u4f7f\u7528\u4e00\u8d9f\u626b\u63cf\u5b8c\u6210\u53cd\u8f6c\u3002<\/p>\n<p><strong>\u8bf4\u660e:<\/strong><\/p>\n<p>1 \u2264&nbsp;<em>m<\/em>&nbsp;\u2264&nbsp;<em>n<\/em>&nbsp;\u2264 \u94fe\u8868\u957f\u5ea6\u3002<\/p>\n<p><strong>\u793a\u4f8b:<\/strong><\/p>\n<pre><strong>\u8f93\u5165:<\/strong> 1-&gt;2-&gt;3-&gt;4-&gt;5-&gt;NULL, <em>m<\/em> = 2, <em>n<\/em> = 4\n\n<strong>\u8f93\u51fa:<\/strong> 1-&gt;4-&gt;3-&gt;2-&gt;5-&gt;NULL<\/pre>\n<p>**\u96be\u5ea6**: Medium<\/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\uff1a36 ms, \u5728\u6240\u6709 Python3 \u63d0\u4ea4\u4e2d\u51fb\u8d25\u4e8691.22% \u7684\u7528\u6237\n\u5185\u5b58\u6d88\u8017\uff1a13.7 MB, \u5728\u6240\u6709 Python3 \u63d0\u4ea4\u4e2d\u51fb\u8d25\u4e869.56% \u7684\u7528\u6237\n\n\u89e3\u9898\u601d\u8def\uff1a\n    \u5148\u627e\u5230\u9700\u8981\u53cd\u8f6c\u7684\u94fe\u8868\u8d77\u59cb\u5904\n    \u4f7f\u7528p,q\u53cc\u6307\u9488\u53cd\u8f6c\u94fe\u8868\uff0c\u4f7f\u7528r\u6307\u9488\u8bb0\u5f55\u53cd\u8f6c\u7684\u540e\u4e00\u4e2a\u8282\u70b9\n    \u6700\u540e\u8fde\u63a5\u94fe\u8868\n\"\"\"\nclass Solution:\n    def reverseBetween(self, head: ListNode, m: int, n: int) -&gt; ListNode:\n        result = ListNode(0, next=head)\n        pre = result\n        for i in range(m-1):    # \u5148\u627e\u5230\u9700\u8981\u7ffb\u8f6c\u7684\u8282\u70b9\u7684\u524d\u4e00\u4e2a\n            pre = pre.next\n\n        p = pre.next    # p,q \u6307\u5411\u5f53\u524d\u9700\u8981\u4ea4\u6362\u7684\u4e24\u4e2a\u8282\u70b9\n        q = p.next\n        for _ in range(m,n):\n            r = q.next  # \u8bb0\u5f55q\u7684\u4e0b\u4e00\u4e2a\u8282\u70b9\n            q.next = p  # \u53cd\u8f6c\u8282\u70b9\n            p = q\n            q = r\n        pre.next.next = q   # \u8fde\u63a5\u94fe\u8868\n        pre.next = p\n        return result.next<\/code><\/pre>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u53cd\u8f6c\u4ece\u4f4d\u7f6e m \u5230 n \u7684\u94fe\u8868\u3002\u8bf7\u4f7f\u7528\u4e00\u8d9f\u626b\u63cf\u5b8c\u6210\u53cd\u8f6c\u3002 \u8bf4\u660e: 1 \u2264&nbsp;m&nbsp;\u2264&#038;nbsp&#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\/647"}],"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=647"}],"version-history":[{"count":1,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=\/wp\/v2\/posts\/647\/revisions"}],"predecessor-version":[{"id":648,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=\/wp\/v2\/posts\/647\/revisions\/648"}],"wp:attachment":[{"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=647"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=647"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=647"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}