python use Counter

  • 0
    class Solution(object):
        def findTheDifference(self, s, t):
            :type s: str
            :type t: str
            :rtype: str
            from collections import Counter
            s = Counter(s)
            t = Counter(t)
            for k in t:
                if s[k] != t[k]:
                    return k

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