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 );//在运算过程中将a的指赋给b，妙！实在是妙！
System.out.println(a+" "+b);
}
}
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