{"id":2702,"date":"2024-07-24T22:11:51","date_gmt":"2024-07-24T14:11:51","guid":{"rendered":"https:\/\/blog.cauchyschwarz.com\/?p=2702"},"modified":"2024-07-24T22:46:01","modified_gmt":"2024-07-24T14:46:01","slug":"%e9%9d%a2%e8%af%95%e9%a2%98%e4%b9%8b%e6%9c%80%e5%a4%a7%e5%ad%90%e6%95%b0%e7%bb%84%e5%92%8c","status":"publish","type":"post","link":"https:\/\/blog.cauchyschwarz.com\/?p=2702","title":{"rendered":"\u9762\u8bd5\u9898\u4e4b\u6700\u5927\u5b50\u6570\u7ec4\u548c"},"content":{"rendered":"\n<p><a href=\"https:\/\/leetcode.cn\/problems\/maximum-subarray\">https:\/\/leetcode.cn\/problems\/maximum-subarray<\/a><\/p>\n\n\n\n<p>\u65b9\u6cd51\uff1a<\/p>\n\n\n\n<p>\u7531\u4e8e\u4efb\u610f\u4e00\u4e2a\u8fde\u7eed\u5b50\u6570\u7ec4\u90fd\u53ef\u4ee5\u7528\u4e24\u4e2a\u7d2f\u8ba1\u548c\u76f8\u51cf\u7b97\u51fa\u6765\uff0c\u6240\u4ee5\u53ef\u4ee5\u5728\u7b97\u7d2f\u8ba1\u548c\u7684\u8fc7\u7a0b\u4e2d\uff0c\u7ef4\u62a4\u4e00\u4e2a\u4e4b\u524d\u5df2\u7ecf\u7b97\u51fa\u6765\u7684\u7d2f\u8ba1\u548c\u7684\u6700\u5c0f\u503c\uff0c\u5f53\u524d\u7d2f\u79ef\u548c\u51cf\u53bb\u524d\u9762\u7684\u6700\u5c0f\u7d2f\u79ef\u548c\uff0c\u5c31\u662f\u53ef\u80fd\u7684\u8981\u6c42\u7684\u503c\u3002\u53e6\u5916\u7d2f\u8ba1\u548c\u672c\u8eab\u4e5f\u662f\u4e00\u4e2a\u8fde\u7eed\u5b50\u6570\u7ec4\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code has-cyan-bluish-gray-background-color has-background\"><code>class Solution {\npublic:\n    int maxSubArray(vector&lt;int>&amp; nums) {\n        int minSum = nums&#91;0];\n        int accuSum = nums&#91;0];\n        int res = nums&#91;0];\n        for (int i = 1; i &lt; nums.size(); i++) {\n            accuSum += nums&#91;i];\n            res = std::max(res, std::max(accuSum - minSum, accuSum));\n            minSum = std::min(minSum, accuSum);\n        }\n        return res;\n    }\n};\n<\/code><\/pre>\n\n\n\n<p>\u65b9\u6cd52\uff1a<\/p>\n\n\n\n<p>\u7eaf\u7cb9\u7684\u52a8\u6001\u89c4\u5212\uff0c\u4f9d\u6b21\u8ba1\u7b97\u4ee5\u7d22\u5f15i\u7ed3\u675f\u7684\u5b50\u6570\u7ec4\u7684\u548c\u7684\u6700\u5927\u503cs[i]\uff0c\u5219\u6709\u9012\u63a8\u516c\u5f0f\uff1a<\/p>\n\n\n\n<p>s[i+1] = max(s[i+1], s[i] + nums[i+1])<\/p>\n\n\n\n<p>nums\u4e3a\u8f93\u5165\u6570\u7ec4\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code has-cyan-bluish-gray-background-color has-background\"><code>class Solution {\npublic:\n    int maxSubArray(vector&lt;int>&amp; nums) {\n        int preSum = nums&#91;0];\n        int res = nums&#91;0];\n        for (int i = 1; i &lt; nums.size(); i++) {\n            preSum = std::max(preSum + nums&#91;i], nums&#91;i]);\n            res = std::max(res, preSum);\n        }\n        return res;\n    }\n};<\/code><\/pre>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-red-color\">\u95ee\u9898\u6269\u5c55\uff1a<\/mark><\/strong>\u89c1\u4e4b\u524d\u5199\u7684hackerrank\u4e0a\u7684Maximum Subarray Sum\u9898\u89e3\u7b14\u8bb0\uff0c\u8be5\u95ee\u9898\u66f4\u96be\u4e00\u70b9\uff0c\u5c31\u662f\u7b97\u548c\u7684\u65f6\u5019\u662f\u7b97\u7684\u53d6\u6a21\u7684\u7ed3\u679c\uff0c\u4f46\u57fa\u672c\u601d\u8def\u8fd8\u662f\u8ddf\u4e0a\u9762\u7684\u65b9\u6cd5\u4e00\u7c7b\u4f3c\uff0c\u5c31\u662f\u4f9d\u6b21\u7b97\u7d2f\u79ef\u548c\uff0c\u7136\u540e\u60f3\u529e\u6cd5\u628a\u524d\u9762\u7684\u6700\u5c0f\u503c\u7ed9\u627e\u51fa\u6765\u3002<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-wp-embed is-provider-note wp-block-embed-note\"><div class=\"wp-block-embed__wrapper\">\n<div class=\"video-container\"><blockquote class=\"wp-embedded-content\" data-secret=\"sWhUbIHYQY\"><a href=\"https:\/\/blog.cauchyschwarz.com\/?p=529\">Hackerrank Interview Preparation Kit<\/a><\/blockquote><iframe loading=\"lazy\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; clip: rect(1px, 1px, 1px, 1px);\" title=\"\u300a Hackerrank Interview Preparation Kit \u300b\u2014Note\" src=\"https:\/\/blog.cauchyschwarz.com\/?p=529&#038;embed=true#?secret=CMgsu9Grer#?secret=sWhUbIHYQY\" data-secret=\"sWhUbIHYQY\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe><\/div>\n<\/div><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>https:\/\/leetcode.cn\/problems\/maximum-subarray \u65b9\u6cd51\uff1a \u7531\u4e8e\u4efb\u610f\u4e00\u4e2a\u8fde\u7eed\u5b50\u6570\u7ec4\u90fd\u53ef\u4ee5\u7528\u4e24\u4e2a\u7d2f\u8ba1\u548c\u76f8\u51cf\u7b97\u51fa\u6765\uff0c\u6240\u4ee5\u53ef\u4ee5\u5728\u7b97\u7d2f\u8ba1\u548c\u7684\u8fc7\u7a0b\u4e2d\uff0c\u7ef4\u62a4\u4e00\u4e2a\u4e4b\u524d\u5df2\u7ecf\u7b97&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10],"tags":[26,217],"class_list":["post-2702","post","type-post","status-publish","format-standard","hentry","category-10","tag-algorithm","tag-interview"],"_links":{"self":[{"href":"https:\/\/blog.cauchyschwarz.com\/index.php?rest_route=\/wp\/v2\/posts\/2702","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.cauchyschwarz.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.cauchyschwarz.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.cauchyschwarz.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.cauchyschwarz.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2702"}],"version-history":[{"count":3,"href":"https:\/\/blog.cauchyschwarz.com\/index.php?rest_route=\/wp\/v2\/posts\/2702\/revisions"}],"predecessor-version":[{"id":2706,"href":"https:\/\/blog.cauchyschwarz.com\/index.php?rest_route=\/wp\/v2\/posts\/2702\/revisions\/2706"}],"wp:attachment":[{"href":"https:\/\/blog.cauchyschwarz.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2702"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.cauchyschwarz.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2702"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.cauchyschwarz.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2702"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}