题解 | #交换变量值#

解题思路

不用第三个变量交换两个值，可以用异或，也可以用加减法

代码实现

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();
//   异或       
//         a = a ^ b;
//         b = a ^ b;
//         a = a ^ b;
        
  
      // 加减
        a = a + b;
        b = a - b;
        a = a - b;
        //write your code here.......
        System.out.println(a+" "+b);
    }
    
  
}