Leetcode 263 Ugly Number

Write a program to check whether a given number is an ugly number.

Ugly numbers are positive numbers whose prime factors only include 2, 3, 5. For example, 6, 8 are ugly while 14 is not ugly since it includes another prime factor 7.

Note that 1 is typically treated as an ugly number.

class Solution(object):
    def isUgly(self, num):
        for x in [2,3,5]:
            while num % x == 0 and num:
                num /= x
        return num == 1