Описать класс Матрица. Создать метод вычитания матриц (Перегруженный оператор “–“). В программе показать пример в C#(си шарп)

using System;
using System.Collections.Generic;

public class Matrix
{
    private double[,] Data;
    public double this[int i, int j]
    {
        get { return Data[i, j]; }
        set { Data[i, j] = value; }
    }

    public Matrix(double[,] data) { this.Data = data; }

    public override string ToString()
    {
        var sb = new System.Text.StringBuilder();
        for (var i = Data.GetLowerBound(0); i <= Data.GetUpperBound(0); i )
        {
            for (var j = Data.GetLowerBound(1); j <= Data.GetUpperBound(1); j )
            {
                sb.AppendFormat("{0} ", Data[i, j]);
            }
            sb.AppendLine();
        }

        return sb.ToString();
    }

    public int GetUpperBound(int i) => this.Data.GetUpperBound(i);


    public static Matrix operator -(Matrix a, Matrix b)
    {
        var c = new double[1 Math.Min(a.GetUpperBound(0), b.GetUpperBound(0)), 1 Math.Min(a.GetUpperBound(1), b.GetUpperBound(1))];
        for (var i = 0; i <= c.GetUpperBound(0); i )
        {
            for (var j = 0; j <= c.GetUpperBound(1); j )
            {
                c[i, j] = a[i, j] - b[i, j];
            }
        };
        return new Matrix(c);
    }
}

class Program
{
    static void Main()
    {
        var n = 5;
        var a = new Matrix(new double[n, n]);
        var b = new Matrix(new double[n, n]);

        for (var i = 0; i < n; i )
        {
            for (var j = 0; j < n; j )
            {
                a[i, j] = i j;
                b[i, j] = i;
            }
        }

        Console.WriteLine(a);
        Console.WriteLine(b);
        Console.WriteLine(a - b);
        Console.ReadKey();

    }
}