Python via computing digits

  • 0

    Here I convert the original number a into its prime factorization list digits. Then just check the overflow condition and whether there is a illegal digit.

    class Solution(object):
        def smallestFactorization(self, a):
            :type a: int
            :rtype: int
            if a == 1: return 1
            digits = []
            for i in range(2, 10)[::-1]:
                while not a % i:
                    a /= i
            ans = int("".join(digits)) if digits else 0
            return ans if -2147483648 <= ans <= 2147483647 and all(d <= '9' for d in digits) and a == 1 else 0

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