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-(b=a);//a等于a+b减原来的a就只省b的值了
    System.out.println(a+" "+b);
}

}