Reference Summary: Problem Statement: Given an integer array nums and an integer k, return true if there are If you found this helpful, check out my channel for even **MORE VIDEOS**!

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Problem Statement: Given an integer array nums and an integer k, return true if there are If you found this helpful, check out my channel for even **MORE VIDEOS**!

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LeetCode #219: Contains Duplicate II in Java | Brute Force vs HashMap vs Sliding Window - Trick!

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