A pythonic solution


  • 0
    P
    class Solution(object):
    def isHappy(self, n):
        """
        :type n: int
        :rtype: bool
        """
        visited = set()
        while n!=1:
            if n in visited:
                return False
            visited.add(n)
            n = reduce(lambda x,y:x+y,(map(lambda x:int(x)**2,list(str(n)))))
        return True

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