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Least Number of Unique Integers after K Removals

Explore how to reduce the number of unique integers remaining after removing exactly k elements from an array. Learn to apply the top k elements pattern efficiently with heaps to find the minimum count of distinct integers. This lesson helps you understand problem constraints and implement solutions to solve similar coding interview challenges.

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:

  • 11 \leq arr.length  ...