{"id":625,"date":"2020-09-26T11:04:46","date_gmt":"2020-09-26T03:04:46","guid":{"rendered":"http:\/\/39.96.58.60\/?p=625"},"modified":"2022-10-18T16:45:04","modified_gmt":"2022-10-18T08:45:04","slug":"leetcode-26-%e5%88%a0%e9%99%a4%e6%8e%92%e5%ba%8f%e6%95%b0%e7%bb%84%e4%b8%ad%e7%9a%84%e9%87%8d%e5%a4%8d%e9%a1%b9","status":"publish","type":"post","link":"http:\/\/www.yatenglg.cn\/blog\/?p=625","title":{"rendered":"Leetcode 26. \u5220\u9664\u6392\u5e8f\u6570\u7ec4\u4e2d\u7684\u91cd\u590d\u9879"},"content":{"rendered":"<p>\u7ed9\u5b9a\u4e00\u4e2a\u6392\u5e8f\u6570\u7ec4\uff0c\u4f60\u9700\u8981\u5728<strong><a href=\"http:\/\/baike.baidu.com\/item\/%E5%8E%9F%E5%9C%B0%E7%AE%97%E6%B3%95\" target=\"_blank\" rel=\"noopener noreferrer\"> \u539f\u5730<\/a><\/strong> \u5220\u9664\u91cd\u590d\u51fa\u73b0\u7684\u5143\u7d20\uff0c\u4f7f\u5f97\u6bcf\u4e2a\u5143\u7d20\u53ea\u51fa\u73b0\u4e00\u6b21\uff0c\u8fd4\u56de\u79fb\u9664\u540e\u6570\u7ec4\u7684\u65b0\u957f\u5ea6\u3002<\/p>\n<p>\u4e0d\u8981\u4f7f\u7528\u989d\u5916\u7684\u6570\u7ec4\u7a7a\u95f4\uff0c\u4f60\u5fc5\u987b\u5728 <strong><a href=\"https:\/\/baike.baidu.com\/item\/%E5%8E%9F%E5%9C%B0%E7%AE%97%E6%B3%95\" target=\"_blank\" rel=\"noopener noreferrer\">\u539f\u5730 <\/a>\u4fee\u6539\u8f93\u5165\u6570\u7ec4 <\/strong>\u5e76\u5728\u4f7f\u7528 O(1) \u989d\u5916\u7a7a\u95f4\u7684\u6761\u4ef6\u4e0b\u5b8c\u6210\u3002<\/p>\n<p>&nbsp;<\/p>\n<p><strong>\u793a\u4f8b&nbsp;1:<\/strong><\/p>\n<pre>\u7ed9\u5b9a\u6570\u7ec4 <em>nums<\/em> = <strong>[1,1,2]<\/strong>, \n\n\n\n\u51fd\u6570\u5e94\u8be5\u8fd4\u56de\u65b0\u7684\u957f\u5ea6 <strong>2<\/strong>, \u5e76\u4e14\u539f\u6570\u7ec4 <em>nums <\/em>\u7684\u524d\u4e24\u4e2a\u5143\u7d20\u88ab\u4fee\u6539\u4e3a <strong><code>1<\/code><\/strong>, <strong><code>2<\/code><\/strong>\u3002 \n\n\n\n\u4f60\u4e0d\u9700\u8981\u8003\u8651\u6570\u7ec4\u4e2d\u8d85\u51fa\u65b0\u957f\u5ea6\u540e\u9762\u7684\u5143\u7d20\u3002<\/pre>\n<p><strong>\u793a\u4f8b&nbsp;2:<\/strong><\/p>\n<pre>\u7ed9\u5b9a<em> nums <\/em>= <strong>[0,0,1,1,1,2,2,3,3,4]<\/strong>,\n\n\n\n\u51fd\u6570\u5e94\u8be5\u8fd4\u56de\u65b0\u7684\u957f\u5ea6 <strong>5<\/strong>, \u5e76\u4e14\u539f\u6570\u7ec4 <em>nums <\/em>\u7684\u524d\u4e94\u4e2a\u5143\u7d20\u88ab\u4fee\u6539\u4e3a <strong><code>0<\/code><\/strong>, <strong><code>1<\/code><\/strong>, <strong><code>2<\/code><\/strong>, <strong><code>3<\/code><\/strong>, <strong><code>4<\/code><\/strong>\u3002\n\n\n\n\u4f60\u4e0d\u9700\u8981\u8003\u8651\u6570\u7ec4\u4e2d\u8d85\u51fa\u65b0\u957f\u5ea6\u540e\u9762\u7684\u5143\u7d20\u3002\n\n<\/pre>\n<p>&nbsp;<\/p>\n<p><strong>\u8bf4\u660e:<\/strong><\/p>\n<p>\u4e3a\u4ec0\u4e48\u8fd4\u56de\u6570\u503c\u662f\u6574\u6570\uff0c\u4f46\u8f93\u51fa\u7684\u7b54\u6848\u662f\u6570\u7ec4\u5462?<\/p>\n<p>\u8bf7\u6ce8\u610f\uff0c\u8f93\u5165\u6570\u7ec4\u662f\u4ee5<strong>\u300c\u5f15\u7528\u300d<\/strong>\u65b9\u5f0f\u4f20\u9012\u7684\uff0c\u8fd9\u610f\u5473\u7740\u5728\u51fd\u6570\u91cc\u4fee\u6539\u8f93\u5165\u6570\u7ec4\u5bf9\u4e8e\u8c03\u7528\u8005\u662f\u53ef\u89c1\u7684\u3002<\/p>\n<p>\u4f60\u53ef\u4ee5\u60f3\u8c61\u5185\u90e8\u64cd\u4f5c\u5982\u4e0b:<\/p>\n<pre>\/\/ <strong>nums<\/strong> \u662f\u4ee5\u201c\u5f15\u7528\u201d\u65b9\u5f0f\u4f20\u9012\u7684\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u4e0d\u5bf9\u5b9e\u53c2\u505a\u4efb\u4f55\u62f7\u8d1d\n\nint len = removeDuplicates(nums);\n\n\n\n\/\/ \u5728\u51fd\u6570\u91cc\u4fee\u6539\u8f93\u5165\u6570\u7ec4\u5bf9\u4e8e\u8c03\u7528\u8005\u662f\u53ef\u89c1\u7684\u3002\n\n\/\/ \u6839\u636e\u4f60\u7684\u51fd\u6570\u8fd4\u56de\u7684\u957f\u5ea6, \u5b83\u4f1a\u6253\u5370\u51fa\u6570\u7ec4\u4e2d<strong>\u8be5\u957f\u5ea6\u8303\u56f4\u5185<\/strong>\u7684\u6240\u6709\u5143\u7d20\u3002\n\nfor (int i = 0; i &lt; len; i++) {\n\n&nbsp; &nbsp; print(nums[i]);\n\n}\n\n<\/pre>\n<p>**\u96be\u5ea6**: Easy<\/p>\n<p>**\u6807\u7b7e**: \u6570\u7ec4\u3001 \u53cc\u6307\u9488\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\uff1a68 ms, \u5728\u6240\u6709 Python3 \u63d0\u4ea4\u4e2d\u51fb\u8d25\u4e8627.10% \u7684\u7528\u6237\n\u5185\u5b58\u6d88\u8017\uff1a14.8 MB, \u5728\u6240\u6709 Python3 \u63d0\u4ea4\u4e2d\u51fb\u8d25\u4e8634.72% \u7684\u7528\u6237\n\n\u89e3\u9898\u601d\u8def\uff1a\n    \u5faa\u73af\u904d\u5386\uff0c\u5982\u679c\u76f8\u7b49\uff0c\u5219\u8c03\u7528del\u5220\u9664\u5143\u7d20\n    \u8fd9\u4e2a\u5b9e\u9645\u4e0e\u9898\u610f\u4e0d\u7b26\uff0c\u9898\u4e2d\u6240\u8ff0\uff1a\u8fd4\u56de\u65b0\u7684\u957f\u5ea6 2, \u5e76\u4e14\u539f\u6570\u7ec4 nums \u7684\u524d\u4e24\u4e2a\u5143\u7d20\u88ab\u4fee\u6539\u4e3a 1, 2\u3002 \u4e0d\u9700\u8981\u8003\u8651\u6570\u7ec4\u4e2d\u8d85\u51fa\u65b0\u957f\u5ea6\u540e\u9762\u7684\u5143\u7d20\n\"\"\"\n\nclass Solution:\n    def removeDuplicates(self, nums: List[int]) -&gt; int:\n        i = 0\n\n        while i + 1 &lt; len(nums):\n            if nums[i] == nums[i + 1]:\n                del nums[i + 1]\n            else:\n                i += 1\n        return len(nums)\n\n\n\"\"\"\n\u6267\u884c\u7528\u65f6\uff1a40 ms, \u5728\u6240\u6709 Python3 \u63d0\u4ea4\u4e2d\u51fb\u8d25\u4e8696.05% \u7684\u7528\u6237\n\u5185\u5b58\u6d88\u8017\uff1a14.8 MB, \u5728\u6240\u6709 Python3 \u63d0\u4ea4\u4e2d\u51fb\u8d25\u4e8648.50% \u7684\u7528\u6237\n\n\u89e3\u9898\u601d\u8def\uff1a\n    \u5faa\u73af\uff0c\u4f7f\u7528index\u8bb0\u5f55\u4e0d\u91cd\u590d\u7684\u5143\u7d20\u4e2a\u6570\uff0c\u4f9d\u6b21\u904d\u5386\u5217\u8868\n    \u91cd\u590d\u5219\u8df3\u8fc7\uff0c\u4e0d\u91cd\u590d\u5219\u5c06\u5f53\u524dindex\u5143\u7d20\u66ff\u6362\u4e3a\u4e0d\u91cd\u590d\u5143\u7d20\n    \u6700\u7ec8\uff0c\u524dindex\u4e2a\u5143\u7d20\u5747\u4e0d\u91cd\u590d\u5373\u53ef\uff0c\u540e\u9762\u5143\u7d20\u4e0d\u4e88\u8003\u8651\n\"\"\"\nclass Solution:\n    def removeDuplicates(self, nums: List[int]) -&gt; int:\n        record = None\n        index = 0\n        for i, value in enumerate(nums):\n            if value == record:\n                pass\n            else:\n                record = value\n                nums[index] = record\n                index += 1\n        return index\n<\/code><\/pre>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u7ed9\u5b9a\u4e00\u4e2a\u6392\u5e8f\u6570\u7ec4\uff0c\u4f60\u9700\u8981\u5728 \u539f\u5730 \u5220\u9664\u91cd\u590d\u51fa\u73b0\u7684\u5143\u7d20\uff0c\u4f7f\u5f97\u6bcf\u4e2a\u5143\u7d20\u53ea\u51fa\u73b0\u4e00\u6b21\uff0c\u8fd4\u56de\u79fb\u9664\u540e\u6570\u7ec4\u7684\u65b0\u957f\u5ea6\u3002 \u4e0d\u8981\u4f7f&#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\/625"}],"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=625"}],"version-history":[{"count":1,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=\/wp\/v2\/posts\/625\/revisions"}],"predecessor-version":[{"id":626,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=\/wp\/v2\/posts\/625\/revisions\/626"}],"wp:attachment":[{"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=625"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=625"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=625"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}