--- title: How I Solved LeetCode 904: Fruit Into Baskets Using... description: A walkthrough of solving LeetCode 904 (Fruit Into Baskets) by reframing it as finding the longest contiguous subarray with at most two distinct values. The... canonical: https://daily.dev/posts/how-i-solved-leetcode-904-fruit-into-baskets-using-sliding-window-eqawh8zrd twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: How I Solved LeetCode 904: Fruit Into Baskets Using Sliding Window | daily.dev og:description: A walkthrough of solving LeetCode 904 (Fruit Into Baskets) by reframing it as finding the longest contiguous subarray with at most two distinct values. The... og:url: https://daily.dev/posts/how-i-solved-leetcode-904-fruit-into-baskets-using-sliding-window-eqawh8zrd og:image: https://api.daily.dev/og/posts/eqawh8ZRD.png og:image:alt: How I Solved LeetCode 904: Fruit Into Baskets Using Sliding Window 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. # How I Solved LeetCode 904: Fruit Into Baskets Using Sliding Window **[Medium](https://daily.dev/sources/medium_js)** · 8 min read · 0 upvotes · 0 comments ## Summary A walkthrough of solving LeetCode 904 (Fruit Into Baskets) by reframing it as finding the longest contiguous subarray with at most two distinct values. The post covers the sliding window pattern step by step in Python, explaining pointer mechanics, why a dictionary is needed to track frequencies, common mistakes (using if vs while, forgetting to delete zero-count keys, off-by-one errors), and why the solution runs in O(n) time with O(1) space. ## 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 --- Tags: [#python](https://daily.dev/tags/python), [#algorithms](https://daily.dev/tags/algorithms) [View this post on daily.dev](https://daily.dev/posts/how-i-solved-leetcode-904-fruit-into-baskets-using-sliding-window-eqawh8zrd) ```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":"How I Solved LeetCode 904: Fruit Into Baskets Using Sliding Window","url":"https://daily.dev/posts/how-i-solved-leetcode-904-fruit-into-baskets-using-sliding-window-eqawh8zrd","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/how-i-solved-leetcode-904-fruit-into-baskets-using-sliding-window-eqawh8zrd"},"datePublished":"2026-07-26T04:56:51.388Z","dateModified":"2026-07-26T04:58:08.532Z","description":"A walkthrough of solving LeetCode 904 (Fruit Into Baskets) by reframing it as finding the longest contiguous subarray with at most two distinct values. 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