namespace MatrixProject; public struct Matrix { private double[,] _data; public int Rows { get => _data.GetLength(0);} public int Columns { get => _data.GetLength(1);} public Matrix(int rows) { _data = new double[rows, rows]; FillMatrixByNumber(0); } public Matrix(int rows, int columns) { _data = new double[rows,columns]; FillMatrixByNumber(0); } public Matrix(int rows, int columns, int fillNumber) { _data = new double[rows, columns]; FillMatrixByNumber(fillNumber); } public double this[int row, int column] { get => _data[row,column]; } private void FillMatrixByNumber(int number) { for (int i = 0; i < Rows; i++) { for (int j= 0; j < Columns; j++) { _data[i, j] = number; } } } }