--- title: Sliding Window Algorithm for Tech Interviews - Full Course description: A full course on the sliding window algorithm for technical interview preparation, taught by an ex-Google engineer. Covers both fixed-size and variable-size... canonical: https://daily.dev/posts/sliding-window-algorithm-for-tech-interviews---full-course-szcgkv33d twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Sliding Window Algorithm for Tech Interviews - Full Course | daily.dev og:description: A full course on the sliding window algorithm for technical interview preparation, taught by an ex-Google engineer. Covers both fixed-size and variable-size... og:url: https://daily.dev/posts/sliding-window-algorithm-for-tech-interviews---full-course-szcgkv33d og:image: https://api.daily.dev/og/posts/sZcGkv33D.png og:image:alt: Sliding Window Algorithm for Tech Interviews - Full Course 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. # Sliding Window Algorithm for Tech Interviews - Full Course **[freeCodeCamp](https://daily.dev/sources/freecodecamp)** · 106 min read · 0 upvotes · 0 comments ## Summary A full course on the sliding window algorithm for technical interview preparation, taught by an ex-Google engineer. Covers both fixed-size and variable-size sliding window patterns through progressively harder problems: max subarray sum, max subarray product, subarray target sum count, and substring anagram detection. Each problem is explained with a whiteboard approach and Python implementation, with detailed complexity analysis showing how the optimized O(N) sliding window avoids the naive O(NK) approach by subtracting trailing and adding leading elements instead of recomputing entire windows. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Medium](https://daily.dev/posts/medium-tjownsknq) · Medium · 0 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), [#data-structures](https://daily.dev/tags/data-structures) [View this post on daily.dev](https://daily.dev/posts/sliding-window-algorithm-for-tech-interviews---full-course-szcgkv33d) ```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":"Sliding Window Algorithm for Tech Interviews - Full Course","url":"https://daily.dev/posts/sliding-window-algorithm-for-tech-interviews---full-course-szcgkv33d","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/sliding-window-algorithm-for-tech-interviews---full-course-szcgkv33d"},"datePublished":"2026-04-23T13:16:46.325Z","dateModified":"2026-04-23T13:17:05.206Z","description":"A full course on the sliding window algorithm for technical interview preparation, taught by an ex-Google engineer. 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