Solution: Top K Frequent Elements
Explore how to identify the top k most frequent elements in an array by counting frequencies with a hash map and maintaining a min heap. Understand the implementation of this optimized approach, along with its time and space complexity tradeoffs, to solve this common coding interview pattern effectively.
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]