Search⌘ K
AI Features
Home
Courses
Grokking the Coding Interview Patterns in JavaScript

Solution: Least Number of Unique Integers after K Removals

Explore how to minimize the number of unique integers remaining after removing exactly k elements from an array. Understand using frequency counts and a min heap to remove the least frequent elements first for efficient solution design with insights on time and space complexities.

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:

  • 1≤1 \leq arr.length ≤103\leq 10^3

  • 1≤1 \leq arr[i] ≤105\leq 10^5 ...