2dArray

public class test {

    public static void main(String[] args) {
        double[][] array2D = {{2.1, 6.2, 3.1, 5.0}, {1.5, 1.6, 1.9, 5.0}, {3.1, 3.2, 2.4, 4.0}};
        System.out.println("The sum of all numbers in the array is: " + getTotal(array2D));
        System.out.println("The average of all numbers in the array is: " + getAverage(array2D));
        for (int i = 0; i < array2D.length; i++)
        {
            System.out.println("Sum of row " + (i+1) +": " + getRowTotal(array2D, i));
        }
        System.out.println();

        for (int i = 0; i < array2D[0].length; i++)
        {
            System.out.println("Sum of column " + (i+1) + ": " + getColTotal(array2D, i));
        }
        System.out.println();

        for (int i = 0; i < array2D.length; i++)
        {
            System.out.println("Highest in row " + (i+1) + ": " + getHighestInRow(array2D, i));
        }
        System.out.println();

        for (int i = 0; i < array2D.length; i++)
        {
            System.out.println("Lowest in row " + (i+1) + ": " + getLowestInRow(array2D, i));
        }

    }

    public static double getTotal(double[][] arry)
    {
        double total = 0;
        for (int row = 0; row < arry.length; row ++)
        {
            for (int col = 0; col < arry[row].length; col++)
            {
                total += arry[row][col];
            }
        }
        return total;
    }

    public static double getAverage(double[][] arry)
    {
        double total = 0;
        for (int col = 0; col < arry.length; col++)
        {
            for (int row = 0; row < arry[0].length; row++)
            {
                total += 1;
            }
        }
        return getTotal(arry) / total;
    }

    public static double getRowTotal(double[][] arry, int row)
    {
        double total = 0;
        for (int col = 0; col < arry[0].length; col++)
        {
            total += arry[row][col];
        }
    return total;
    }

    public static double getColTotal(double[][] arry, int col)
    {
        double total = 0;
        for (int row = 0; row < arry.length; row++)
        {
            total += arry[row][col];
        }
    return total;
    }

    public static double getHighestInRow(double[][] arry, int row)
    {
        double highest = arry[row][0];
        for (int col = 1; col < arry[row].length; col++)
        {
            if (arry[row][col] > highest)
            {
                highest = arry[row][col];
            }
        }
    return highest;
    }

    public static double getLowestInRow(double[][] arry, int row)
    {
        double lowest = arry[row][0];
        for (int col = 0; col < arry[row].length; col++)
        {
            if (arry[row][col] < lowest)
            {
                lowest = arry[row][col];
            }
        }
    return lowest;
    }
}