Simple python solution

  • 0
    import collections
    class Solution(object):
        def findTheDifference(self, s, t):
            sc = collections.Counter(s)
            tc = collections.Counter(t)
            '''subtraction of 2 dictionaries, returns the diff dictionary. list(dict) returns a list of only the keys, same as list(dict.keys()). get the 0th
            element of that list and return it'''
            return list(tc-sc)[0]

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