Ugly Number

c++

class Solution {
public:
    bool isUgly(int num) {
        for (int i=2; i<=6 && num; i++)
            while (num % i == 0)
                num /= i;
        return num == 1;
    }
};

python

class Solution(object):
    def isUgly(self, num):
        """
        :type num: int
        :rtype: bool
        """
        if num<1:
            return False;
        for x in 8,6,5,4,3,2:
            while num%x==0:
                num /= x

        return num==1

reference:
https://leetcode.com/discuss/52703/2-4-lines-every-language