【程序15】

题目：输入三个整数x,y,z，请把这三个数由小到大输出。

import java.util.*;

public class lianxi15 {

    public static void main(String[] args) {

        input fnc = new input();

        int x=0, y=0, z=0;

        System.out.print("输入第一个数字：");

        x = fnc.input();

        System.out.print("输入第二个数字：");

        y = fnc.input();

        System.out.print("输入第三个数字：");

        z = fnc.input();   

        if(x > y) {

          int t = x;

          x = y;

          y = t;

        }

        if(x > z) {

          int t = x;

          x = z;

          z = t;

        }

        if(y > z) {

          int t = y;

          y = z;

          z = t;

        }

        System.out.println( "三个数字由小到大排列为： "+x + " " + y + " " + z);

    }

}

class input{

    public int input() {

        int value = 0;

        Scanner s = new Scanner(System.in);

        value = s.nextInt();

        return value;

    }

}