丑数:因子中只包含2,3,5,的数,叫做丑数;
package suanfadaolun; import java.util.Scanner; /** * Created by Taoyongpan on 2017/11/1. * 丑数:因子只有2,3,5的数 */ public class Choushu { public static void main(String[] args){ Scanner sc = new Scanner(System.in); while (sc.hasNext()){ int n = sc.nextInt(); if (n == 0){ System.out.println("不是"); }else { while (n!=1){ if (n%2==0){ n = n/2; } if (n%3==0){ n = n/3; } if (n%5==0){ n = n/5; } if(n%2!=0&&n%3!=0&&n%5!=0){ break; } } if (n==1){ System.out.println("是"); } else{ System.out.println("不是"); } } } } }