leetcode - Ugly Number

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