{"id":723,"date":"2020-09-26T11:14:38","date_gmt":"2020-09-26T03:14:38","guid":{"rendered":"http:\/\/39.96.58.60\/?p=723"},"modified":"2022-10-18T16:37:29","modified_gmt":"2022-10-18T08:37:29","slug":"leetcode-1207-%e7%8b%ac%e4%b8%80%e6%97%a0%e4%ba%8c%e7%9a%84%e5%87%ba%e7%8e%b0%e6%ac%a1%e6%95%b0","status":"publish","type":"post","link":"http:\/\/www.yatenglg.cn\/blog\/?p=723","title":{"rendered":"Leetcode 1207. \u72ec\u4e00\u65e0\u4e8c\u7684\u51fa\u73b0\u6b21\u6570"},"content":{"rendered":"<p>\u7ed9\u4f60\u4e00\u4e2a\u6574\u6570\u6570\u7ec4&nbsp;<code>arr<\/code>\uff0c\u8bf7\u4f60\u5e2e\u5fd9\u7edf\u8ba1\u6570\u7ec4\u4e2d\u6bcf\u4e2a\u6570\u7684\u51fa\u73b0\u6b21\u6570\u3002<\/p>\n<p>\u5982\u679c\u6bcf\u4e2a\u6570\u7684\u51fa\u73b0\u6b21\u6570\u90fd\u662f\u72ec\u4e00\u65e0\u4e8c\u7684\uff0c\u5c31\u8fd4\u56de&nbsp;<code>true<\/code>\uff1b\u5426\u5219\u8fd4\u56de <code>false<\/code>\u3002<\/p>\n<p>&nbsp;<\/p>\n<p><strong>\u793a\u4f8b 1\uff1a<\/strong><\/p>\n<pre><strong>\u8f93\u5165\uff1a<\/strong>arr = [1,2,2,1,1,3]\n\n<strong>\u8f93\u51fa\uff1a<\/strong>true\n\n<strong>\u89e3\u91ca\uff1a<\/strong>\u5728\u8be5\u6570\u7ec4\u4e2d\uff0c1 \u51fa\u73b0\u4e86 3 \u6b21\uff0c2 \u51fa\u73b0\u4e86 2 \u6b21\uff0c3 \u53ea\u51fa\u73b0\u4e86 1 \u6b21\u3002\u6ca1\u6709\u4e24\u4e2a\u6570\u7684\u51fa\u73b0\u6b21\u6570\u76f8\u540c\u3002<\/pre>\n<p><strong>\u793a\u4f8b 2\uff1a<\/strong><\/p>\n<pre><strong>\u8f93\u5165\uff1a<\/strong>arr = [1,2]\n\n<strong>\u8f93\u51fa\uff1a<\/strong>false\n\n<\/pre>\n<p><strong>\u793a\u4f8b 3\uff1a<\/strong><\/p>\n<pre><strong>\u8f93\u5165\uff1a<\/strong>arr = [-3,0,1,-3,1,1,1,-3,10,0]\n\n<strong>\u8f93\u51fa\uff1a<\/strong>true\n\n<\/pre>\n<p>&nbsp;<\/p>\n<p><strong>\u63d0\u793a\uff1a<\/strong><\/p>\n<ul>\n<li><code>1 &lt;= arr.length&nbsp;&lt;= 1000<\/code><\/li>\n<li><code>-1000 &lt;= arr[i] &lt;= 1000<\/code><\/li>\n<\/ul>\n<p>**\u96be\u5ea6**: Easy<\/p>\n<p>**\u6807\u7b7e**: \u54c8\u5e0c\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\uff1a44 ms, \u5728\u6240\u6709 Python3 \u63d0\u4ea4\u4e2d\u51fb\u8d25\u4e8695.14% \u7684\u7528\u6237\n\u5185\u5b58\u6d88\u8017\uff1a13.7 MB, \u5728\u6240\u6709 Python3 \u63d0\u4ea4\u4e2d\u51fb\u8d25\u4e865.42% \u7684\u7528\u6237\n\n\u89e3\u9898\u601d\u8def\uff1a\n    \u5148\u7edf\u8ba1\u6bcf\u4e2a\u6570\u51fa\u73b0\u7684\u6b21\u6570\n    \u7136\u540e\u67e5\u770b\u6b21\u6570\u662f\u5426\u5b58\u5728\u91cd\u590d\n\"\"\"\nclass Solution:\n    def uniqueOccurrences(self, arr: List[int]) -&gt; bool:\n        record = {}\n        for a in arr:\n            if a in record:\n                record[a] += 1\n            else:\n                record[a] = 1\n        return len(record.values()) == len(set(record.values()))<\/code><\/pre>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u7ed9\u4f60\u4e00\u4e2a\u6574\u6570\u6570\u7ec4&nbsp;arr\uff0c\u8bf7\u4f60\u5e2e\u5fd9\u7edf\u8ba1\u6570\u7ec4\u4e2d\u6bcf\u4e2a\u6570\u7684\u51fa\u73b0\u6b21\u6570\u3002 \u5982\u679c\u6bcf\u4e2a\u6570\u7684\u51fa\u73b0\u6b21\u6570\u90fd\u662f\u72ec\u4e00\u65e0\u4e8c\u7684\uff0c&#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\/723"}],"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=723"}],"version-history":[{"count":1,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=\/wp\/v2\/posts\/723\/revisions"}],"predecessor-version":[{"id":724,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=\/wp\/v2\/posts\/723\/revisions\/724"}],"wp:attachment":[{"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=723"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=723"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=723"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}