关于#java#的问题：但是只要是多组数据输出就是乱七八糟

Question

已经很多次卡这种地方了我真的不知道怎么改了
感觉题目不难好写 。但是只要是多组数据输出就是乱七八糟

Answer 1

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        while (scanner.hasNext()) {
            double x1 = scanner.nextDouble();
            double y1 = scanner.nextDouble();
            double x2 = scanner.nextDouble();
            double y2 = scanner.nextDouble();
            double distance = Math.sqrt((x1 - x2) * (x1 - x2) + (y1 - y2) * (y1 - y2));
            System.out.printf("%.2f\n", distance);
        }
        scanner.close();
    }
}