java - Determine sum of specific elements within an array -

i have array, stores series of doubles inputted user. length of array user's choice, , therefore varies. put numbers loop, calculates average , swaps outlier last index of array. new average calculated without outlier , new outlier swapped second last index of array. cycle repeated until 1 element remains.

however outlier not removed array, need calculate average somehow without outlier. thinking specify index of elements want include in average.

it seems process should this:

1. compute average traversing array till n elements.
2. find outlier.
3. swap last element.
4. now set n (current size of array - 1). , keep on doing till size = 0;

i have compiled code may work you. keep in mind may need make small changes per requirement.

  public static void main(string[] args) throws filenotfoundexception {         double[] dataarray = new double[] {1.5,2.5,3.5,4.5,7.5,8.5,2.5};         int arraysizetoconsider = dataarray.length;         double outlier;         int index_outlier;         double avg;         double diffinoutlierandavg;          while(arraysizetoconsider > 0) {             outlier = dataarray[0];             index_outlier = 0;             avg = computesum(dataarray,arraysizetoconsider) / (arraysizetoconsider);//avg of elements             diffinoutlierandavg = math.abs(avg - outlier);              // find outlier             for(int index = 0; index<arraysizetoconsider; index++)//increments index             {                 if(math.abs(avg - dataarray[index]) > diffinoutlierandavg) {                     outlier = dataarray[index];                     index_outlier = index;                 }             }             double temp = dataarray[arraysizetoconsider -1];             dataarray[arraysizetoconsider -1] = outlier;             dataarray[index_outlier] = temp;             arraysizetoconsider = arraysizetoconsider -1;             system.out.println("average: " + avg + " outlier: " + outlier + " index " + index_outlier + " array size consider: " +arraysizetoconsider);         }     }     private static double computesum(double[] array, int arraysizetoconsider) {         double sum = 0;         (int = 0; < arraysizetoconsider; i++) {             sum = sum + array[i];         }         return sum;     } 

and here output:

average: 4.357142857142857 outlier: 8.5 index 5 array size consider: 6 average: 3.6666666666666665 outlier: 7.5 index 4 array size consider: 5 average: 2.9 outlier: 4.5 index 3 array size consider: 4 average: 2.5 outlier: 1.5 index 0 array size consider: 3 average: 2.8333333333333335 outlier: 3.5 index 2 array size consider: 2 average: 2.5 outlier: 2.5 index 0 array size consider: 1 average: 2.5 outlier: 2.5 index 0 array size consider: 0

there improvements can made , have skipped them. need figure out :)