![Contains Duplicate - Python Solution [Leetcode 217]](https://i.ytimg.com/vi/M-ih-AbRuF8/mqdefault.jpg)
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Last Updated: September 25, 2026
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neetcode.io/ - A better way to prepare for Coding Interviews Twitter: twitter.com/neetcode1 Discord: ... Given an integer array nums, return true if any value appears at least twice in the array, and return false if every element is distinct. Most teachers introduce solutions as fully-formed recipes. But in doing so, they totally miss how solutions are DISCOVERED. Master Data Structures & Algorithms for FREE at AlgoMap.io/ Code solutions in If you found this helpful, my channel for even **MORE VIDEOS**! Super helpful resources: nikoo28.github.io/all-my-links/ It is very important to learn about the utility functions and data ... Join this channel to get access to perks: youtube.com/channel/UCGPoHTVjMN77wcGknXPHl1Q/join ... New spin-off series for Data Structures and Algorithm. Let's look at [
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