Java练习，

Java练习，

从键盘接收3个整数a,b,c，按大小顺序输出。

import java.util.Scanner;

public class Texercise{
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        System.out.print("请输入3个整数:");
        int a = in.nextInt();
        int b = in.nextInt();
        int c = in.nextInt();
        for (int i = 0; i < 2; i++) {
            if (a < b) { //假如 a=2 b=3;
                a = a^b; // a = 2^3
                b = a^b; // b = (2^3)^3 = 2 任意一个数异或本身结果为0 ，任何一个数异或0结果为本身
                a = a^b; // a = (2^3)^2 = 3
            }
            if (b < c) {
                c = b^c;
                b = b^c;
                c = b^c;
            } 
        }
        System.out.println(a+" "+b+" "+c);
    }   
}