--- title: 75 Days of Leetcode — Day 5: #53— Maximum Subarray description: A walkthrough of LeetCode problem #53 (Maximum Subarray) using Kadane's Algorithm implemented in Python. The solution iterates through the array in a single... canonical: https://daily.dev/posts/75-days-of-leetcode-day-5-53-maximum-subarray-gcq9zoy8q twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: 75 Days of Leetcode — Day 5: #53— Maximum Subarray | daily.dev og:description: A walkthrough of LeetCode problem #53 (Maximum Subarray) using Kadane's Algorithm implemented in Python. The solution iterates through the array in a single... og:url: https://daily.dev/posts/75-days-of-leetcode-day-5-53-maximum-subarray-gcq9zoy8q og:image: https://api.daily.dev/og/posts/GCQ9ZOy8Q.png og:image:alt: 75 Days of Leetcode — Day 5: #53— Maximum Subarray og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # 75 Days of Leetcode — Day 5: #53— Maximum Subarray **[Medium](https://daily.dev/sources/medium_js)** · 2 min read · 0 upvotes · 0 comments ## Summary A walkthrough of LeetCode problem #53 (Maximum Subarray) using Kadane's Algorithm implemented in Python. The solution iterates through the array in a single pass, resetting the running sum to zero whenever it goes negative, and tracking the maximum sum seen. Achieves O(n) time complexity and O(1) space complexity. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Max Absolute Difference of Two Subarrays \(Kadane's Algorithm\)](https://daily.dev/posts/max-absolute-difference-of-two-subarrays-kadane-s-algorithm--segwcbjli) · C\# Corner · 2 upvotes · 0 comments - [How I Solved LeetCode 904: Fruit Into Baskets Using Sliding Window](https://daily.dev/posts/how-i-solved-leetcode-904-fruit-into-baskets-using-sliding-window-eqawh8zrd) · Medium · 0 upvotes · 0 comments --- Tags: [#python](https://daily.dev/tags/python), [#algorithms](https://daily.dev/tags/algorithms), [#dynamic-programming](https://daily.dev/tags/dynamic-programming) [View this post on daily.dev](https://daily.dev/posts/75-days-of-leetcode-day-5-53-maximum-subarray-gcq9zoy8q) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"75 Days of Leetcode — Day 5: #53— Maximum Subarray","url":"https://daily.dev/posts/75-days-of-leetcode-day-5-53-maximum-subarray-gcq9zoy8q","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/75-days-of-leetcode-day-5-53-maximum-subarray-gcq9zoy8q"},"datePublished":"2026-07-26T04:46:31.633Z","dateModified":"2026-07-26T04:47:15.524Z","description":"A walkthrough of LeetCode problem #53 (Maximum Subarray) using Kadane's Algorithm implemented in Python. 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