class Solution:
    def topKFrequent(self, nums: List[int], k: int) -> List[int]:

        from collections import Counter
        hashmap = Counter(nums)

        freqs = [[key, value] for key, value in hashmap.items()]
        freqs.sort(key = lambda x : x[1], reverse = True)

        return [x[0] for x in freqs[:k]]