public class Solution {
public boolean 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;
return num == 1;
}
}
if (num > 0)
for (int i=2; i<6; i++)
while (num % i == 0)
num /= i;
return num == 1;