Problem Description
输入两点坐标(X1,Y1),(X2,Y2),计算并输出两点间的距离。
Input
输入数据有多组,每组占一行,由4个实数组成,分别表示x1,y1,x2,y2,数据之间用空格隔开。
Output
对于每组输入数据,输出一行,结果保留两位小数。
import java.util.Scanner;
public class Main {public static void main(String[] args) {Scanner sc = new Scanner(System.in);while (sc.hasNext()) {double a = sc.nextDouble();double b = sc.nextDouble();double c = sc.nextDouble();double d = sc.nextDouble();double num = Math.sqrt((a - c) * (a - c) + (b - d) * (b - d));System.out.println(String.format("%.2f",num));}}
}