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;//^ 异或运算符
        b = a ^ b;
        a = a ^ b;
//         int a = 5; // 二进制: 0101
//         int b = 3; // 二进制: 0011

//         a = a ^ b; // 0110
//         b = a ^ b; // 0101 → 变成了原来的 a
//         a = a ^ b; // 0011 → 变成了原来的 b
        System.out.println(a+" "+b);
    }
}