LeetCode:263.醜數

class Solution {
public:
    bool isUgly(int num) {
        if(num<=0)
        {
            return false;
        }
        if(num==1)
        {
            return true;
        }
        while(num!=1)
        {
            if(num%2==0)
            {
                num/=2;
                continue;
            }
            if(num%3==0)
            {
                num/=3;
                continue;
            }
            if(num%5==0)
            {
                num/=5;
                continue;
            }
            else
            {
                return false;
            }
        }
        return true;
    }
};