leetcode——263. 丑数

class Solution:
    def isUgly(self, num: int) -> bool:
        if num==0:
            return False
        if num==1:
            return True
        if num%5!=0 and num%3!=0 and num%2!=0:
            return False
        while num%5==0 or num%3==0 or num%2==0:
            if num%5==0:num=num//5
            elif num%3==0:num=num//3
            elif num%2==0:num=num//2
        return num==1