Solution: Least Number of Unique Integers after K Removals
Understand how to minimize the number of unique integers in an array after removing exactly k elements. This lesson teaches the use of frequency maps and min-heaps to efficiently identify and remove the least frequent elements first, optimizing removals to achieve the minimal distinct count. You will also learn to analyze the time and space complexity of this approach.
We'll cover the following...
We'll cover the following...
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]...