Top K frequent elements

TopK.py

  # Leetcode https://leetcode.com/problems/top-k-frequent-elements/
  
  def topKFrequent(self, nums, k):
        """
        :type nums: List[int]
        :type k: int
        :rtype: List[int]
        """
        from collections import Counter
        d = Counter()
        d.update(nums)
        return list(map(lambda x : x[0], d.most_common()[0:k]))