#5 - Contains Duplicate - Leetcode 217 - Solved in 4 ways
#dsa #leetcode #problemsolving #datastructures #algorithm
00:00 Problem statement
00:41 Brute Force O(n^2)
01:26 Sorting O(n log n)
02:15 Set O(n)
03:10 HashMap O(n)
04:12 Coding
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Problem link: https://leetcode.com/problems/contain...
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