{"id":591,"date":"2020-09-26T11:00:52","date_gmt":"2020-09-26T03:00:52","guid":{"rendered":"http:\/\/39.96.58.60\/?p=591"},"modified":"2022-10-18T16:45:05","modified_gmt":"2022-10-18T08:45:05","slug":"leetcode-%e9%9d%a2%e8%af%95%e9%a2%98-08-08-%e6%9c%89%e9%87%8d%e5%a4%8d%e5%ad%97%e7%ac%a6%e4%b8%b2%e7%9a%84%e6%8e%92%e5%88%97%e7%bb%84%e5%90%88","status":"publish","type":"post","link":"http:\/\/www.yatenglg.cn\/blog\/?p=591","title":{"rendered":"Leetcode \u9762\u8bd5\u9898 08.08. \u6709\u91cd\u590d\u5b57\u7b26\u4e32\u7684\u6392\u5217\u7ec4\u5408"},"content":{"rendered":"<p>\u6709\u91cd\u590d\u5b57\u7b26\u4e32\u7684\u6392\u5217\u7ec4\u5408\u3002\u7f16\u5199\u4e00\u79cd\u65b9\u6cd5\uff0c\u8ba1\u7b97\u67d0\u5b57\u7b26\u4e32\u7684\u6240\u6709\u6392\u5217\u7ec4\u5408\u3002<\/p>\n<p><strong>\u793a\u4f8b1:<\/strong><\/p>\n<pre><strong> \u8f93\u5165<\/strong>\uff1aS = \"qqe\"\n\n<strong> \u8f93\u51fa<\/strong>\uff1a[\"eqq\",\"qeq\",\"qqe\"]\n\n<\/pre>\n<p><strong>\u793a\u4f8b2:<\/strong><\/p>\n<pre><strong> \u8f93\u5165<\/strong>\uff1aS = \"ab\"\n\n<strong> \u8f93\u51fa<\/strong>\uff1a[\"ab\", \"ba\"]\n\n<\/pre>\n<p><strong>\u63d0\u793a:<\/strong><\/p>\n<ol>\n<li>\u5b57\u7b26\u90fd\u662f\u82f1\u6587\u5b57\u6bcd\u3002<\/li>\n<li>\u5b57\u7b26\u4e32\u957f\u5ea6\u5728[1, 9]\u4e4b\u95f4\u3002<\/li>\n<\/ol>\n<p>**\u96be\u5ea6**: Medium<\/p>\n<p>**\u6807\u7b7e**: \u56de\u6eaf\u7b97\u6cd5\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\uff1a44 ms, \u5728\u6240\u6709 Python3 \u63d0\u4ea4\u4e2d\u51fb\u8d25\u4e8689.10% \u7684\u7528\u6237\n\u5185\u5b58\u6d88\u8017\uff1a13.6 MB, \u5728\u6240\u6709 Python3 \u63d0\u4ea4\u4e2d\u51fb\u8d25\u4e8643.09% \u7684\u7528\u6237\n\n\u89e3\u9898\u601d\u8def\uff1a\n    \u56de\u6eaf\n    \u66f4\u65b0\u5f53\u524d\u5269\u4f59\u5b57\u7b26\u4e32\uff0c\u8df3\u8fc7\u5f53\u524d\u5b57\u7b26\u4e32\u4e2d\u5df2\u7ecf\u5904\u7406\u8fc7\u7684\u5143\u7d20\n\"\"\"\nclass Solution:\n    def permutation(self, S: str) -&gt; List[str]:\n        result = []\n        def backtrack(s, current):  # \u5f53\u524d\u5269\u4f59\u5b57\u7b26\u4e32\uff0c\u5f53\u524d\u5b57\u7b26\u4e32\n            if s == '':\n                result.append(current[:])\n                return\n            for i in range(len(s)):\n                if i &gt; 0 and s[i] in s[:i]: # \u8df3\u8fc7\u5f53\u524d\u5269\u4f59\u5b57\u7b26\u4e32\u4e2d\u91cd\u590d\u7684\u5143\u7d20\n                    continue\n                backtrack(s[:i]+s[i+1:], current+s[i])\n        backtrack(S, '')\n        return result<\/code><\/pre>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u6709\u91cd\u590d\u5b57\u7b26\u4e32\u7684\u6392\u5217\u7ec4\u5408\u3002\u7f16\u5199\u4e00\u79cd\u65b9\u6cd5\uff0c\u8ba1\u7b97\u67d0\u5b57\u7b26\u4e32\u7684\u6240\u6709\u6392\u5217\u7ec4\u5408\u3002 \u793a\u4f8b1: \u8f93\u5165\uff1aS = &#8220;qqe&#8221; \u8f93\u51fa\uff1a&#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\/591"}],"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=591"}],"version-history":[{"count":1,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=\/wp\/v2\/posts\/591\/revisions"}],"predecessor-version":[{"id":592,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=\/wp\/v2\/posts\/591\/revisions\/592"}],"wp:attachment":[{"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=591"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=591"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=591"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}