Java代码实现圆形温泉游池半径互换

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        System.out.print("请输入第一个圆的半径r1：");
        double r1 = scanner.nextDouble();
        System.out.print("请输入第二个圆的半径r2：");
        double r2 = scanner.nextDouble();

        System.out.println("交换前：r1=' + r1 + ', r2=' + r2);

        // 交换r1和r2的值
        double temp = r1;
        r1 = r2;
        r2 = temp;

        System.out.println("交换后：r1=' + r1 + ', r2=' + r2);
    }
}