{"id":473,"date":"2020-09-26T10:45:50","date_gmt":"2020-09-26T02:45:50","guid":{"rendered":"http:\/\/39.96.58.60\/?p=473"},"modified":"2022-10-18T16:39:14","modified_gmt":"2022-10-18T08:39:14","slug":"leetcode-973-%e6%9c%80%e6%8e%a5%e8%bf%91%e5%8e%9f%e7%82%b9%e7%9a%84-k-%e4%b8%aa%e7%82%b9","status":"publish","type":"post","link":"http:\/\/www.yatenglg.cn\/blog\/?p=473","title":{"rendered":"Leetcode 973. \u6700\u63a5\u8fd1\u539f\u70b9\u7684 K \u4e2a\u70b9"},"content":{"rendered":"<p>\u6211\u4eec\u6709\u4e00\u4e2a\u7531\u5e73\u9762\u4e0a\u7684\u70b9\u7ec4\u6210\u7684\u5217\u8868 <code>points<\/code>\u3002\u9700\u8981\u4ece\u4e2d\u627e\u51fa <code>K<\/code> \u4e2a\u8ddd\u79bb\u539f\u70b9 <code>(0, 0)<\/code> \u6700\u8fd1\u7684\u70b9\u3002<\/p>\n<p>\uff08\u8fd9\u91cc\uff0c\u5e73\u9762\u4e0a\u4e24\u70b9\u4e4b\u95f4\u7684\u8ddd\u79bb\u662f\u6b27\u51e0\u91cc\u5fb7\u8ddd\u79bb\u3002\uff09<\/p>\n<p>\u4f60\u53ef\u4ee5\u6309\u4efb\u4f55\u987a\u5e8f\u8fd4\u56de\u7b54\u6848\u3002\u9664\u4e86\u70b9\u5750\u6807\u7684\u987a\u5e8f\u4e4b\u5916\uff0c\u7b54\u6848\u786e\u4fdd\u662f\u552f\u4e00\u7684\u3002<\/p>\n<p>&nbsp;<\/p>\n<p><strong>\u793a\u4f8b 1\uff1a<\/strong><\/p>\n<pre><strong>\u8f93\u5165\uff1a<\/strong>points = [[1,3],[-2,2]], K = 1\n\n<strong>\u8f93\u51fa\uff1a<\/strong>[[-2,2]]\n\n<strong>\u89e3\u91ca\uff1a <\/strong>\n\n(1, 3) \u548c\u539f\u70b9\u4e4b\u95f4\u7684\u8ddd\u79bb\u4e3a sqrt(10)\uff0c\n\n(-2, 2) \u548c\u539f\u70b9\u4e4b\u95f4\u7684\u8ddd\u79bb\u4e3a sqrt(8)\uff0c\n\n\u7531\u4e8e sqrt(8) &lt; sqrt(10)\uff0c(-2, 2) \u79bb\u539f\u70b9\u66f4\u8fd1\u3002\n\n\u6211\u4eec\u53ea\u9700\u8981\u8ddd\u79bb\u539f\u70b9\u6700\u8fd1\u7684 K = 1 \u4e2a\u70b9\uff0c\u6240\u4ee5\u7b54\u6848\u5c31\u662f [[-2,2]]\u3002\n\n<\/pre>\n<p><strong>\u793a\u4f8b 2\uff1a<\/strong><\/p>\n<pre><strong>\u8f93\u5165\uff1a<\/strong>points = [[3,3],[5,-1],[-2,4]], K = 2\n\n<strong>\u8f93\u51fa\uff1a<\/strong>[[3,3],[-2,4]]\n\n\uff08\u7b54\u6848 [[-2,4],[3,3]] \u4e5f\u4f1a\u88ab\u63a5\u53d7\u3002\uff09\n\n<\/pre>\n<p>&nbsp;<\/p>\n<p><strong>\u63d0\u793a\uff1a<\/strong><\/p>\n<ol>\n<li><code>1 &lt;= K &lt;= points.length &lt;= 10000<\/code><\/li>\n<li><code>-10000 &lt; points[i][0] &lt; 10000<\/code><\/li>\n<li><code>-10000 &lt; points[i][1] &lt; 10000<\/code><\/li>\n<\/ol>\n<p>**\u96be\u5ea6**: Medium<\/p>\n<p>**\u6807\u7b7e**: \u5806\u3001 \u6392\u5e8f\u3001 \u5206\u6cbb\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\uff1a688 ms, \u5728\u6240\u6709 Python3 \u63d0\u4ea4\u4e2d\u51fb\u8d25\u4e8697.75% \u7684\u7528\u6237\n\u5185\u5b58\u6d88\u8017\uff1a18.8 MB, \u5728\u6240\u6709 Python3 \u63d0\u4ea4\u4e2d\u51fb\u8d25\u4e8633.70% \u7684\u7528\u6237\n\n\u89e3\u9898\u601d\u8def\uff1a\n    \u4ee5\u5230\u539f\u70b9\u7684\u8ddd\u79bb\u6392\u5e8f\uff0c\u7136\u540e\u53d6\u524dK\u4e2a\u5373\u53ef\n\"\"\"\nclass Solution:\n    def kClosest(self, points: List[List[int]], K: int) -&gt; List[List[int]]:\n        points.sort(key=lambda point: point[0]**2+point[1]**2)\n        return points[:K]<\/code><\/pre>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u6211\u4eec\u6709\u4e00\u4e2a\u7531\u5e73\u9762\u4e0a\u7684\u70b9\u7ec4\u6210\u7684\u5217\u8868 points\u3002\u9700\u8981\u4ece\u4e2d\u627e\u51fa K \u4e2a\u8ddd\u79bb\u539f\u70b9 (0, 0) \u6700\u8fd1\u7684\u70b9\u3002 \uff08\u8fd9\u91cc&#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\/473"}],"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=473"}],"version-history":[{"count":1,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=\/wp\/v2\/posts\/473\/revisions"}],"predecessor-version":[{"id":474,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=\/wp\/v2\/posts\/473\/revisions\/474"}],"wp:attachment":[{"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=473"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=473"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=473"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}