Solution: Least Number of Unique Integers after K Removals
Understand how to minimize the number of unique integers remaining after removing exactly k elements from an array. Learn to use frequency counts and a min heap to remove less frequent numbers first, efficiently solving this problem with optimal time and space complexity.
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Statement
You are given an integer array, arr, and an integer, k. Your task is to remove exactly k elements from the array so that the number of distinct integers remaining in the array is minimized. Determine the minimum possible count of unique integers after the removals.
Constraints:
arr.lengtharr[i]...