leetcode-Ugly Number

一直除以2,3,5,即可。

public class Solution {    public boolean isUgly(int num) {if(num <= 0)    return false;        while(num != 1){            if(num %2 == 0)                num = num /2;            else if(num % 3== 0)                num = num /3;            else if(num % 5 == 0)                num = num/5;            else{                return false;            }        }        return true;    }}