daily log 10.03.20

class Solution(object):
    def findPairs(self, nums, k):
        """
        :type nums: List[int]
        :type k: int
        :rtype: int
        """
        my_dict = {}
        for num in nums:
            if num not in my_dict:
                my_dict[num] = 1
            else:
                my_dict[num] = my_dict[num] + 1

        if k == 0:
            dupes = [k for k,v in my_dict.items() if v>1]
            return len(dupes)


        results = []

        for num in nums:
            if num + k in my_dict:
                results.append((num, num+k))


        return len(set(results))