NYOJ题目101两点距离

 1 import java.util.Scanner;
 2 
 3 public class Main {
 4 
 5     public static void main(String[] args) {
 6         
 7         Scanner sc=new Scanner(System.in);
 8         
 9         int times=sc.nextInt();
10         while(times-->0){
11             double x1=sc.nextDouble();
12             double y1=sc.nextDouble();
13             double x2=sc.nextDouble();
14             double y2=sc.nextDouble();
15             double ans=getDistance(x1,y1,x2,y2);
16             System.out.printf("%.2f\n",ans);
17         }
18         
19     }
20     
21     public static double getDistance(double x1,double y1,double x2,double y2){
22         return Math.sqrt((x1-x2)*(x1-x2)+(y1-y2)*(y1-y2));
23     }
24     
25 }