{"id":349,"date":"2020-09-26T10:29:41","date_gmt":"2020-09-26T02:29:41","guid":{"rendered":"http:\/\/39.96.58.60\/?p=349"},"modified":"2022-10-18T16:39:49","modified_gmt":"2022-10-18T08:39:49","slug":"leetcode-70-%e7%88%ac%e6%a5%bc%e6%a2%af","status":"publish","type":"post","link":"http:\/\/www.yatenglg.cn\/blog\/?p=349","title":{"rendered":"Leetcode 70. \u722c\u697c\u68af"},"content":{"rendered":"<p>\u5047\u8bbe\u4f60\u6b63\u5728\u722c\u697c\u68af\u3002\u9700\u8981 <em>n<\/em>&nbsp;\u9636\u4f60\u624d\u80fd\u5230\u8fbe\u697c\u9876\u3002<\/p>\n<p>\u6bcf\u6b21\u4f60\u53ef\u4ee5\u722c 1 \u6216 2 \u4e2a\u53f0\u9636\u3002\u4f60\u6709\u591a\u5c11\u79cd\u4e0d\u540c\u7684\u65b9\u6cd5\u53ef\u4ee5\u722c\u5230\u697c\u9876\u5462\uff1f<\/p>\n<p><strong>\u6ce8\u610f\uff1a<\/strong>\u7ed9\u5b9a <em>n<\/em> \u662f\u4e00\u4e2a\u6b63\u6574\u6570\u3002<\/p>\n<p><strong>\u793a\u4f8b 1\uff1a<\/strong><\/p>\n<pre><strong>\u8f93\u5165\uff1a<\/strong> 2\n\n<strong>\u8f93\u51fa\uff1a<\/strong> 2\n\n<strong>\u89e3\u91ca\uff1a<\/strong> \u6709\u4e24\u79cd\u65b9\u6cd5\u53ef\u4ee5\u722c\u5230\u697c\u9876\u3002\n\n1.  1 \u9636 + 1 \u9636\n\n2.  2 \u9636<\/pre>\n<p><strong>\u793a\u4f8b 2\uff1a<\/strong><\/p>\n<pre><strong>\u8f93\u5165\uff1a<\/strong> 3\n\n<strong>\u8f93\u51fa\uff1a<\/strong> 3\n\n<strong>\u89e3\u91ca\uff1a<\/strong> \u6709\u4e09\u79cd\u65b9\u6cd5\u53ef\u4ee5\u722c\u5230\u697c\u9876\u3002\n\n1.  1 \u9636 + 1 \u9636 + 1 \u9636\n\n2.  1 \u9636 + 2 \u9636\n\n3.  2 \u9636 + 1 \u9636\n\n<\/pre>\n<p>**\u96be\u5ea6**: Easy<\/p>\n<p>**\u6807\u7b7e**: \u52a8\u6001\u89c4\u5212\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\uff1a32 ms, \u5728\u6240\u6709 Python3 \u63d0\u4ea4\u4e2d\u51fb\u8d25\u4e8695.41% \u7684\u7528\u6237\n\u5185\u5b58\u6d88\u8017\uff1a13.7 MB, \u5728\u6240\u6709 Python3 \u63d0\u4ea4\u4e2d\u51fb\u8d25\u4e8647.58% \u7684\u7528\u6237\n\n\u89e3\u9898\u601d\u8def\uff1a\n    \u52a8\u6001\u89c4\u5212\n    \u6bcf\u6b21\u53ea\u80fd\u722c1\u5c42 \u6216 \u722c2\u5c42\u3002\n    \u4f8b\uff1a5\u5c42\uff0c \u53ef\u4ee5\u75313\u5c42 +2 \u5230\u8fbe\u3001\u4e5f\u53ef\u4ee54\u5c42+1 \u5230\u8fbe\u3002\n    \u6240\u4ee55\u5c42\u7684\u65b9\u6cd5\u6570 = 3\u5c42\u7684\u65b9\u6cd5\u6570 + 4\u5c42\u7684\u65b9\u6cd5\u6570\n    dp[i] = dp[i-1] + dp[i-2]\n\"\"\"\nclass Solution:\n    def climbStairs(self, n: int) -&gt; int:\n        if n == 1:\n            return 1\n        if n == 2:\n            return 2\n        dp = [[] for _ in range(n)]\n        dp[0] = 1\n        dp[1] = 2\n        for i in range(2,n):\n            dp[i] = dp[i-1] + dp[i-2]\n        return dp[-1]<\/code><\/pre>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u5047\u8bbe\u4f60\u6b63\u5728\u722c\u697c\u68af\u3002\u9700\u8981 n&nbsp;\u9636\u4f60\u624d\u80fd\u5230\u8fbe\u697c\u9876\u3002 \u6bcf\u6b21\u4f60\u53ef\u4ee5\u722c 1 \u6216 2 \u4e2a\u53f0\u9636\u3002\u4f60\u6709\u591a\u5c11\u79cd\u4e0d\u540c\u7684\u65b9&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","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\/349"}],"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=349"}],"version-history":[{"count":1,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=\/wp\/v2\/posts\/349\/revisions"}],"predecessor-version":[{"id":350,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=\/wp\/v2\/posts\/349\/revisions\/350"}],"wp:attachment":[{"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=349"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=349"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=349"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}