using System;

public class Program

{

    public static double[] arrayAvg(double[, ] a)           //method name: arrayAvg

    {                                                       //2D array of double (parameter)

        double[] tempArray = new double[a.GetLength(0)];    //return: tempArray

        double sum = 0;                                     

        for (int i = 0; i < a.GetLength(0); i++)            //a 1D array of doubles

        {

            for (int j = 0; j < a.GetLength(1); j++)        //this method is caluclating the average of each row of my 2D array and storing them in tempArray

            {

                sum = sum + a[i, j];

            }

​

            double avg = sum / (a.GetLength(1));

            tempArray[i] = avg;

            sum = 0;

        }

​

        return tempArray;

    }

​

    public static void Main()

    {   double [ , ];

        double a;

        double[] tempArray = new double[a.GetLength(0)];    //return: tempArray

        double sum = 0;                                     

        for (int i = 0; i < a.GetLength(0); i++)            //a 1D array of doubles

        {

            for (int j = 0; j < a.GetLength(1); j++)        //this method is caluclating the average of each row of my 2D array and storing them in tempArray

            {

                sum = sum + a[i, j];

            }

​

            double avg = sum / (a.GetLength(1));

            tempArray[i] = avg;

            sum = 0;

    }

}