Leetcode•Feb 27, 2026
Top K Frequent Elements
Hazrat Ali
Leetcode
Given an integer array nums and an integer k, return the k most frequent elements. You may return the answer in any order.
Example 1:
Input: nums = [1,1,1,2,2,3], k = 2
Output: [1,2]
Example 2:
Input: nums = [1], k = 1
Output: [1]
Example 3:
Input: nums = [1,2,1,2,1,2,3,1,3,2], k = 2
Output: [1,2]
Solution
var topKFrequent = function(nums, k) {
let freq = new Map();
for (let num of nums) {
freq.set(num, (freq.get(num) || 0) + 1);
}
let sorted = [...freq.entries()].sort((a, b) => b[1] - a[1]);
return sorted.slice(0, k).map(entry => entry[0]);
};