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.

public class Solution {
public boolean isUgly(int num) {
if (num == 1)
return true;
if (num == 0)
return false;
//Take all factor 2 out of num
while(num%2 == 0) {
num = num/2;
}
//Take all factor 3 out of num
while (num%3 == 0) {
num = num/3;
}
//Take all factor 5 out of num
while (num%5 == 0) {
num = num/5;
}
if (num == 1) {
return true;
} else {
return false;
}
}
}

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