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.
1 class Solution { 2 public boolean isUgly(int n) { 3 if(n==0) return false; 4 while(n%2==0) n/=2; 5 while(n%3==0) n/=3; 6 while(n%5==0) n/=5; 7 return n==1; 8 } 9 }