{"id":533,"date":"2020-09-26T10:52:56","date_gmt":"2020-09-26T02:52:56","guid":{"rendered":"http:\/\/39.96.58.60\/?p=533"},"modified":"2022-10-18T16:38:55","modified_gmt":"2022-10-18T08:38:55","slug":"leetcode-4-%e5%af%bb%e6%89%be%e4%b8%a4%e4%b8%aa%e6%ad%a3%e5%ba%8f%e6%95%b0%e7%bb%84%e7%9a%84%e4%b8%ad%e4%bd%8d%e6%95%b0","status":"publish","type":"post","link":"http:\/\/www.yatenglg.cn\/blog\/?p=533","title":{"rendered":"Leetcode 4. \u5bfb\u627e\u4e24\u4e2a\u6b63\u5e8f\u6570\u7ec4\u7684\u4e2d\u4f4d\u6570"},"content":{"rendered":"<p>\u7ed9\u5b9a\u4e24\u4e2a\u5927\u5c0f\u4e3a m \u548c n \u7684\u6b63\u5e8f\uff08\u4ece\u5c0f\u5230\u5927\uff09\u6570\u7ec4&nbsp;<code>nums1<\/code> \u548c&nbsp;<code>nums2<\/code>\u3002<\/p>\n<p>\u8bf7\u4f60\u627e\u51fa\u8fd9\u4e24\u4e2a\u6b63\u5e8f\u6570\u7ec4\u7684\u4e2d\u4f4d\u6570\uff0c\u5e76\u4e14\u8981\u6c42\u7b97\u6cd5\u7684\u65f6\u95f4\u590d\u6742\u5ea6\u4e3a&nbsp;O(log(m + n))\u3002<\/p>\n<p>\u4f60\u53ef\u4ee5\u5047\u8bbe&nbsp;<code>nums1<\/code>&nbsp;\u548c&nbsp;<code>nums2<\/code>&nbsp;\u4e0d\u4f1a\u540c\u65f6\u4e3a\u7a7a\u3002<\/p>\n<p>&nbsp;<\/p>\n<p><strong>\u793a\u4f8b 1:<\/strong><\/p>\n<pre>nums1 = [1, 3]\n\nnums2 = [2]\n\n\n\n\u5219\u4e2d\u4f4d\u6570\u662f 2.0\n\n<\/pre>\n<p><strong>\u793a\u4f8b 2:<\/strong><\/p>\n<pre>nums1 = [1, 2]\n\nnums2 = [3, 4]\n\n\n\n\u5219\u4e2d\u4f4d\u6570\u662f (2 + 3)\/2 = 2.5\n\n<\/pre>\n<p>**\u96be\u5ea6**: Hard<\/p>\n<p>**\u6807\u7b7e**: \u6570\u7ec4\u3001 \u4e8c\u5206\u67e5\u627e\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\uff1a80 ms, \u5728\u6240\u6709 Python3 \u63d0\u4ea4\u4e2d\u51fb\u8d25\u4e868.29% \u7684\u7528\u6237\n\u5185\u5b58\u6d88\u8017\uff1a13.8 MB, \u5728\u6240\u6709 Python3 \u63d0\u4ea4\u4e2d\u51fb\u8d25\u4e866.15% \u7684\u7528\u6237\n\n\u89e3\u9898\u601d\u8def\uff1a\n    \u5148\u6bd4\u8f83\u4e24\u5217\u8868\u7684\u6700\u5c0f\u503c\n    1. \u4ece\u6700\u5c0f\u503c\u8f83\u5c0f\u7684\u5217\u8868\u4e2d\uff0c\u5bfb\u627e\u6bd4\u6700\u5c0f\u503c\u8f83\u5927\u5217\u8868\u6700\u5c0f\u503c \u5c0f\u7684\u503c\u3002\n    2. \u5bf9\u6700\u5c0f\u503c\u8f83\u5c0f\u5217\u8868\u4e2d\u5269\u4e0b\u7684\u503c\n\"\"\"\nclass Solution:\n    def findMedianSortedArrays(self, nums1, nums2) -&gt; float:\n        if nums1 == [] or nums2 == []:\n            l = nums1\n            l.extend(nums2)\n            num = len(l)\n            if num %2 == 0:\n                media = (l[num\/\/2-1] + l[num\/\/2])\/2\n            else:\n                media = l[num\/\/2]\n            return media\n\n        if min(nums1) &lt;= min(nums2):\n            min_l, max_l = nums1, nums2\n        else:\n            min_l, max_l = nums2, nums1\n\n        r = self.search(min(max_l), min_l)\n        num = len(nums1) + len(nums2)\n        p, q = 0, 0\n        l = min_l[:r]\n        min_l = min_l[r:]\n\n        while r &lt;= num\/\/2:\n            if min_l == [] or max_l == []:\n                l.extend(min_l)\n                l.extend(max_l)\n                break\n            if min_l[0] &lt; max_l[0]:\n                l.append(min_l.pop(0))\n            else:\n                l.append(max_l.pop(0))\n\n        if num %2 == 0:\n            media = (l[num\/\/2-1] + l[num\/\/2])\/2\n        else:\n            media = l[num\/\/2]\n        return media\n\n    def search(self, num, nums):\n        r = 0\n        if num &lt; max(nums):\n            while num &gt; nums[r]:\n                r += 1\n            return r\n        else:\n            return len(nums)-1<\/code><\/pre>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u7ed9\u5b9a\u4e24\u4e2a\u5927\u5c0f\u4e3a m \u548c n \u7684\u6b63\u5e8f\uff08\u4ece\u5c0f\u5230\u5927\uff09\u6570\u7ec4&nbsp;nums1 \u548c&nbsp;nums2\u3002 \u8bf7\u4f60\u627e\u51fa&#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\/533"}],"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=533"}],"version-history":[{"count":1,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=\/wp\/v2\/posts\/533\/revisions"}],"predecessor-version":[{"id":534,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=\/wp\/v2\/posts\/533\/revisions\/534"}],"wp:attachment":[{"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=533"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=533"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=533"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}