阵列中变量之间的距离

Question

我是Java新手，我试图在站点字段中的变量之间获得距离，但似乎无法工作。

public static void main(String[]args){ 
double[] stations = {10,20,30};{ 
for(int i=0;i<stations.length-2;i++){ 
    double distance=stations[i+1] + stations[i]; 
} 

Answer 1

你需要substract而不是add每一个之间计算距离。所以你需要两个for循环来获得所有组合。

例子：

public static void main(String args[]){ 

      int i =0; 
      int j=0; 
      double[] stations = {10,20,30}; 
      for(i=0;i<stations.length;i++){ 
       for(j=i+1;j<stations.length;j++){ 
       System.out.println("distance between station "+i+" and station "+j+" is "+ (stations[j] - stations[i])); 
       }    
      } 
} 

输出：

distance between station 0 and station 1 is 10.0 
distance between station 0 and station 2 is 20.0 
distance between station 1 and station 2 is 10.0