Top K Frequent Elements | Leetcode

This video explains a very important programming interview problem which is to find the top k frequent elements in a given array.This problem is based on heap and hashmap.I have shown all the required concepts by showing the intuition using examples.I have first explained the simple solution and then optimized to give a better solution.I have explained the problem in two different ways using heap and hash and i have also compared the efficiency with each other and showed which is better and why.
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