Contains Duplicate in O(n) With a HashSet | LeetCode #217 (Easy)
Contains Duplicate Explained in 3 Minutes | HashSet LeetCode Solution
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Last Updated: September 21, 2026
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neetcode.io/ - A better way to prepare for In this video, we solve the classic Two Sum problem in Kotlin and understand how to optimize the solution from O(n²) to O(n) using ... Super helpful resources: nikoo28.github.io/all-my-links/ It is very important to learn about the utility functions and data ... Master Data Structures & Algorithms for FREE at AlgoMap.io/ Hey everyone, first of all, apologies for the bad audio quality, I will look into getting a better mic soon. secondly, this video is to ... This question is from the Blind 75 series, The solution
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