Solution: Top K Frequent Elements
Explore methods to find the k most frequent elements in an integer array by counting frequencies with a hash map and using a min-heap to maintain the top k elements. Understand both naive and optimized approaches with their time and space complexities to implement efficient solutions in JavaScript.
Statement
Given an array of integers, arr, and an integer, k, return the most frequent elements.
Note: You can return the answer in any order.
Constraints:
-
arr.length -
arr[i]