Java中的byte类型及用if-else对三个数排序
1、byte类型是Java的基本数据类型，占一个字节，2^8，表数范围：-128~127

import java.util.Scanner;public class TestSort {    public static void main(String[] args) {        Scanner scanner = new Scanner(System.in);        System.out.print("num1=");        int num1 = scanner.nextInt();        System.out.print("num2=");        int num2 = scanner.nextInt();        System.out.print("num3=");        int num3 = scanner.nextInt();        int tmp;        if (num1 > num2) {            tmp = num1;            num1 = num2;            num2 = tmp;        }                if (num3 > num2) {            System.out.print(num1 + " " + num2 + " " + num3);        } else if (num3 > num1) {            System.out.print(num1 + " " + num3 + " " + num2);        } else {            System.out.print(num3 + " " + num1 + " " + num2);        }    }}