{"id":649,"date":"2020-09-26T11:07:14","date_gmt":"2020-09-26T03:07:14","guid":{"rendered":"http:\/\/39.96.58.60\/?p=649"},"modified":"2022-10-18T16:38:24","modified_gmt":"2022-10-18T08:38:24","slug":"leetcode-344-%e5%8f%8d%e8%bd%ac%e5%ad%97%e7%ac%a6%e4%b8%b2","status":"publish","type":"post","link":"http:\/\/www.yatenglg.cn\/blog\/?p=649","title":{"rendered":"Leetcode 344. \u53cd\u8f6c\u5b57\u7b26\u4e32"},"content":{"rendered":"<p>\u7f16\u5199\u4e00\u4e2a\u51fd\u6570\uff0c\u5176\u4f5c\u7528\u662f\u5c06\u8f93\u5165\u7684\u5b57\u7b26\u4e32\u53cd\u8f6c\u8fc7\u6765\u3002\u8f93\u5165\u5b57\u7b26\u4e32\u4ee5\u5b57\u7b26\u6570\u7ec4 <code>char[]<\/code> \u7684\u5f62\u5f0f\u7ed9\u51fa\u3002<\/p>\n<p>\u4e0d\u8981\u7ed9\u53e6\u5916\u7684\u6570\u7ec4\u5206\u914d\u989d\u5916\u7684\u7a7a\u95f4\uff0c\u4f60\u5fc5\u987b<strong><a href=\"https:\/\/baike.baidu.com\/item\/\u539f\u5730\u7b97\u6cd5\" target=\"_blank\" rel=\"noopener noreferrer\">\u539f\u5730<\/a>\u4fee\u6539\u8f93\u5165\u6570\u7ec4<\/strong>\u3001\u4f7f\u7528 O(1) \u7684\u989d\u5916\u7a7a\u95f4\u89e3\u51b3\u8fd9\u4e00\u95ee\u9898\u3002<\/p>\n<p>\u4f60\u53ef\u4ee5\u5047\u8bbe\u6570\u7ec4\u4e2d\u7684\u6240\u6709\u5b57\u7b26\u90fd\u662f <a href=\"https:\/\/baike.baidu.com\/item\/ASCII\" target=\"_blank\" rel=\"noopener noreferrer\">ASCII<\/a> \u7801\u8868\u4e2d\u7684\u53ef\u6253\u5370\u5b57\u7b26\u3002<\/p>\n<p>&nbsp;<\/p>\n<p><strong>\u793a\u4f8b 1\uff1a<\/strong><\/p>\n<pre><strong>\u8f93\u5165\uff1a<\/strong>[\"h\",\"e\",\"l\",\"l\",\"o\"]\n\n<strong>\u8f93\u51fa\uff1a<\/strong>[\"o\",\"l\",\"l\",\"e\",\"h\"]\n\n<\/pre>\n<p><strong>\u793a\u4f8b 2\uff1a<\/strong><\/p>\n<pre><strong>\u8f93\u5165\uff1a<\/strong>[\"H\",\"a\",\"n\",\"n\",\"a\",\"h\"]\n\n<strong>\u8f93\u51fa\uff1a<\/strong>[\"h\",\"a\",\"n\",\"n\",\"a\",\"H\"]<\/pre>\n<p>**\u96be\u5ea6**: Easy<\/p>\n<p>**\u6807\u7b7e**: \u53cc\u6307\u9488\u3001 \u5b57\u7b26\u4e32\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\u4e8698.98% \u7684\u7528\u6237\n\u5185\u5b58\u6d88\u8017\uff1a14.4 MB, \u5728\u6240\u6709 Python3 \u63d0\u4ea4\u4e2d\u51fb\u8d25\u4e8619.40% \u7684\u7528\u6237\n\n\u89e3\u9898\u601d\u8def\uff1a\n    \u53cc\u6307\u9488\u3002\u5206\u522b\u6307\u5411\u5217\u8868\u9996\u5c3e\uff0c\u7136\u540e\u4ea4\u6362\u6307\u9488\u6307\u5411\u5143\u7d20\n\"\"\"\nclass Solution:\n    def reverseString(self, s: List[str]) -&gt; None:\n        \"\"\"\n        Do not return anything, modify s in-place instead.\n        \"\"\"\n        n = len(s)\n        l, r = 0, n-1   # \u5de6\u53f3\u6307\u9488\u5206\u522b\u6307\u5411\u9996\u5c3e\n        while r &gt; l:\n            s[l], s[r] = s[r], s[l] # \u4ea4\u6362\u5143\u7d20\n            l += 1  # \u79fb\u52a8\u6307\u9488\n            r -= 1<\/code><\/pre>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u7f16\u5199\u4e00\u4e2a\u51fd\u6570\uff0c\u5176\u4f5c\u7528\u662f\u5c06\u8f93\u5165\u7684\u5b57\u7b26\u4e32\u53cd\u8f6c\u8fc7\u6765\u3002\u8f93\u5165\u5b57\u7b26\u4e32\u4ee5\u5b57\u7b26\u6570\u7ec4 char[] \u7684\u5f62\u5f0f\u7ed9\u51fa\u3002 \u4e0d\u8981\u7ed9\u53e6\u5916\u7684\u6570&#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\/649"}],"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=649"}],"version-history":[{"count":1,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=\/wp\/v2\/posts\/649\/revisions"}],"predecessor-version":[{"id":650,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=\/wp\/v2\/posts\/649\/revisions\/650"}],"wp:attachment":[{"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=649"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=649"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=649"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}