题解 | #交换变量值#
交换变量值
https://www.nowcoder.com/practice/bd243c9bef70492f91959cc5556546a8
import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner in = new Scanner(System.in); int a = in.nextInt(); int b = in.nextInt(); a = a + b - (b = a); System.out.println(a + " " + b); } }
首先,将a的值赋给b((b = a)),然后再用a与b的和减去b(此时b的值为a),从而达到将a,b交换值。