Python in 40ms


  • 0
    X
    def trailingZeroes(self, n):
            """
            :type n: int
            :rtype: int
            """
            import math
            if n == 0:
                return 0
            
            res = 0
            x = (int)(math.log(n,5)) # Have 5^x inside
            for i in xrange(1,x+1):
                res += n/5**i
            return (int)(res)
    

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