LeetCode(263)Ugly Number

c++代码如下

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