{"id":667,"date":"2020-09-26T11:09:01","date_gmt":"2020-09-26T03:09:01","guid":{"rendered":"http:\/\/39.96.58.60\/?p=667"},"modified":"2022-10-18T16:38:24","modified_gmt":"2022-10-18T08:38:24","slug":"leetcode-71-%e7%ae%80%e5%8c%96%e8%b7%af%e5%be%84","status":"publish","type":"post","link":"http:\/\/www.yatenglg.cn\/blog\/?p=667","title":{"rendered":"Leetcode 71. \u7b80\u5316\u8def\u5f84"},"content":{"rendered":"<p>\u4ee5 Unix \u98ce\u683c\u7ed9\u51fa\u4e00\u4e2a\u6587\u4ef6\u7684<strong>\u7edd\u5bf9\u8def\u5f84<\/strong>\uff0c\u4f60\u9700\u8981\u7b80\u5316\u5b83\u3002\u6216\u8005\u6362\u53e5\u8bdd\u8bf4\uff0c\u5c06\u5176\u8f6c\u6362\u4e3a\u89c4\u8303\u8def\u5f84\u3002<\/p>\n<p>\u5728 Unix \u98ce\u683c\u7684\u6587\u4ef6\u7cfb\u7edf\u4e2d\uff0c\u4e00\u4e2a\u70b9\uff08<code>.<\/code>\uff09\u8868\u793a\u5f53\u524d\u76ee\u5f55\u672c\u8eab\uff1b\u6b64\u5916\uff0c\u4e24\u4e2a\u70b9 \uff08<code>..<\/code>\uff09&nbsp;\u8868\u793a\u5c06\u76ee\u5f55\u5207\u6362\u5230\u4e0a\u4e00\u7ea7\uff08\u6307\u5411\u7236\u76ee\u5f55\uff09\uff1b\u4e24\u8005\u90fd\u53ef\u4ee5\u662f\u590d\u6742\u76f8\u5bf9\u8def\u5f84\u7684\u7ec4\u6210\u90e8\u5206\u3002\u66f4\u591a\u4fe1\u606f\u8bf7\u53c2\u9605\uff1a<a href=\"https:\/\/blog.csdn.net\/u011327334\/article\/details\/50355600\" target=\"_blank\" rel=\"noopener noreferrer\">Linux \/ Unix\u4e2d\u7684\u7edd\u5bf9\u8def\u5f84 vs \u76f8\u5bf9\u8def\u5f84<\/a><\/p>\n<p>\u8bf7\u6ce8\u610f\uff0c\u8fd4\u56de\u7684\u89c4\u8303\u8def\u5f84\u5fc5\u987b\u59cb\u7ec8\u4ee5\u659c\u6760 <code>\/<\/code> \u5f00\u5934\uff0c\u5e76\u4e14\u4e24\u4e2a\u76ee\u5f55\u540d\u4e4b\u95f4\u5fc5\u987b\u53ea\u6709\u4e00\u4e2a\u659c\u6760 <code>\/<\/code>\u3002\u6700\u540e\u4e00\u4e2a\u76ee\u5f55\u540d\uff08\u5982\u679c\u5b58\u5728\uff09<strong>\u4e0d\u80fd<\/strong>\u4ee5 <code>\/<\/code> \u7ed3\u5c3e\u3002\u6b64\u5916\uff0c\u89c4\u8303\u8def\u5f84\u5fc5\u987b\u662f\u8868\u793a\u7edd\u5bf9\u8def\u5f84\u7684<strong>\u6700\u77ed<\/strong>\u5b57\u7b26\u4e32\u3002<\/p>\n<p>&nbsp;<\/p>\n<p><strong>\u793a\u4f8b 1\uff1a<\/strong><\/p>\n<pre><strong>\u8f93\u5165\uff1a\"<\/strong>\/home\/\"\n\n<strong>\u8f93\u51fa\uff1a\"<\/strong>\/home\"\n\n<strong>\u89e3\u91ca\uff1a<\/strong>\u6ce8\u610f\uff0c\u6700\u540e\u4e00\u4e2a\u76ee\u5f55\u540d\u540e\u9762\u6ca1\u6709\u659c\u6760\u3002\n\n<\/pre>\n<p><strong>\u793a\u4f8b 2\uff1a<\/strong><\/p>\n<pre><strong>\u8f93\u5165\uff1a\"<\/strong>\/..\/\"\n\n<strong>\u8f93\u51fa\uff1a\"<\/strong>\/\"\n\n<strong>\u89e3\u91ca\uff1a<\/strong>\u4ece\u6839\u76ee\u5f55\u5411\u4e0a\u4e00\u7ea7\u662f\u4e0d\u53ef\u884c\u7684\uff0c\u56e0\u4e3a\u6839\u662f\u4f60\u53ef\u4ee5\u5230\u8fbe\u7684\u6700\u9ad8\u7ea7\u3002\n\n<\/pre>\n<p><strong>\u793a\u4f8b 3\uff1a<\/strong><\/p>\n<pre><strong>\u8f93\u5165\uff1a\"<\/strong>\/home\/\/foo\/\"\n\n<strong>\u8f93\u51fa\uff1a\"<\/strong>\/home\/foo\"\n\n<strong>\u89e3\u91ca\uff1a<\/strong>\u5728\u89c4\u8303\u8def\u5f84\u4e2d\uff0c\u591a\u4e2a\u8fde\u7eed\u659c\u6760\u9700\u8981\u7528\u4e00\u4e2a\u659c\u6760\u66ff\u6362\u3002\n\n<\/pre>\n<p><strong>\u793a\u4f8b 4\uff1a<\/strong><\/p>\n<pre><strong>\u8f93\u5165\uff1a\"<\/strong>\/a\/.\/b\/..\/..\/c\/\"\n\n<strong>\u8f93\u51fa\uff1a\"<\/strong>\/c\"\n\n<\/pre>\n<p><strong>\u793a\u4f8b 5\uff1a<\/strong><\/p>\n<pre><strong>\u8f93\u5165\uff1a\"<\/strong>\/a\/..\/..\/b\/..\/c\/\/.\/\/\"\n\n<strong>\u8f93\u51fa\uff1a\"<\/strong>\/c\"\n\n<\/pre>\n<p><strong>\u793a\u4f8b 6\uff1a<\/strong><\/p>\n<pre><strong>\u8f93\u5165\uff1a\"<\/strong>\/a\/\/b\/\/\/\/c\/d\/\/.\/.\/\/..\"\n\n<strong>\u8f93\u51fa\uff1a\"<\/strong>\/a\/b\/c\"<\/pre>\n<p>**\u96be\u5ea6**: Medium<\/p>\n<p>**\u6807\u7b7e**: \u6808\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\uff1a32 ms, \u5728\u6240\u6709 Python3 \u63d0\u4ea4\u4e2d\u51fb\u8d25\u4e8698.66% \u7684\u7528\u6237\n\u5185\u5b58\u6d88\u8017\uff1a13.6 MB, \u5728\u6240\u6709 Python3 \u63d0\u4ea4\u4e2d\u51fb\u8d25\u4e865.45% \u7684\u7528\u6237\n\n\u89e3\u9898\u601d\u8def\uff1a\n    \u6808\n\"\"\"\nclass Solution:\n    def simplifyPath(self, path: str) -&gt; str:\n        result = [] # \u6700\u7ec8\u7ed3\u679c\u5217\u8868\n        path = path.split('\/')  # \u4ee5\/\u62c6\u5206\u8def\u5f84\uff0c\u591a\u4e2a\/\/\u62c6\u5206\u540e\u4e3a''\u7a7a\u5b57\u7b26\n        for p in path:\n            if p == '' or p == '.': # \u5982\u679c\u662f''\u7a7a\u5b57\u7b26\uff0c\u6216'.'\u5f53\u524d\u8def\u5f84\uff0c\u5219\u5ffd\u7565\n                pass\n            elif p == '..':         # '..'\u4e0a\u4e00\u7ea7\u76ee\u5f55\uff0c\u51fa\u6808\n                if result:\n                    result.pop()\n            else:\n                result.append(p)    # \u5176\u4ed6\u60c5\u51b5\u4e3a\u8def\u5f84\uff0c\u5165\u6808\n        return '\/' + '\/'.join(result)   # \u683c\u5f0f\u5316\uff0c\u8def\u5f84\u4e4b\u95f4\u6dfb\u52a0\/\uff0c \u9996\u4f4d\u7f6e\u6dfb\u52a0\/<\/code><\/pre>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u4ee5 Unix \u98ce\u683c\u7ed9\u51fa\u4e00\u4e2a\u6587\u4ef6\u7684\u7edd\u5bf9\u8def\u5f84\uff0c\u4f60\u9700\u8981\u7b80\u5316\u5b83\u3002\u6216\u8005\u6362\u53e5\u8bdd\u8bf4\uff0c\u5c06\u5176\u8f6c\u6362\u4e3a\u89c4\u8303\u8def\u5f84\u3002 \u5728 Unix \u98ce\u683c&#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\/667"}],"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=667"}],"version-history":[{"count":1,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=\/wp\/v2\/posts\/667\/revisions"}],"predecessor-version":[{"id":668,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=\/wp\/v2\/posts\/667\/revisions\/668"}],"wp:attachment":[{"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=667"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=667"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=667"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}