题解 | #交换变量值#

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int a = scanner.nextInt();
        int b = scanner.nextInt();

        //write your code here.......
        a=a^b;// 按位与就是一种对称加密 a^b^b = a， a=a^b 保存了两个数字的信息，分别提取出来 
        b=a^b;// b=a^b^b = a
        a=a^b;// a=a^b^a = b
        

        System.out.println(a+" "+b);
    }
}