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Problem: Top K Frequent Elements

Explore how to implement a solution to identify the top K most frequent elements in an integer array using a min heap in Java. Understand frequency counting, priority queue operations, and optimize runtime to O(n log k) while managing space complexity. This lesson helps you build efficient algorithms to handle frequency-based problems.

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Statement

You are given an integer array nums and an integer k. Your task is to find the k elements that appear most frequently in nums. The result may be returned in any order.

Constraints:

  • 1≤1 \leq nums.length ≤105\leq 10^5

  • −104≤-10^4 \leq nums[i] ≤104\leq 10^4

  • k is in the range [1,[1, the number of unique elements in nums ...