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, 5For 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 boolean isUgly(int num) { if(num==0) return false; while(num%2 == 0){ num = num/2; } while(num%5 == 0){ num = num/5; } while(num%3 == 0){ num = num/3; } return num ==1; } } This siteOriginal articleAll follow "Attribution-NonCommercial-ShareAlike 4.0 License (CC BY-NC-SA 4.0)Please retain the following annotations when sharing or adapting:
Original author:Jake Tao,source:"263. Ugly Number"
