public static GenericMatrix <T> operator +(GenericMatrix <T> firstMatrix, GenericMatrix <T> secondMatrix) // Problem 10
{
if (firstMatrix.Rows != secondMatrix.Rows || firstMatrix.Cols != secondMatrix.Cols)
{
throw new ArgumentException("Matrices must have same size.");
}
GenericMatrix <T> result = new GenericMatrix <T>(firstMatrix.rows, firstMatrix.cols);
for (int row = 0; row < firstMatrix.Rows; row++)
{
for (int col = 0; col < firstMatrix.Cols; col++)
{
result[row, col] = (dynamic)firstMatrix[row, col] + (dynamic)secondMatrix[row, col];
}
}
return(result);
}
public static GenericMatrix <T> operator *(GenericMatrix <T> firstMatrix, GenericMatrix <T> secondMatrix)
{
if (firstMatrix.Cols != secondMatrix.Rows)
{
throw new ArgumentException("First matrix cols size and second matrix rows must be the same!");
}
GenericMatrix <T> result = new GenericMatrix <T>(firstMatrix.Rows, secondMatrix.Cols);
for (int row = 0; row < firstMatrix.Rows; row++)
{
for (int col = 0; col < secondMatrix.Cols; col++)
{
for (int i = 0; i < firstMatrix.Cols; i++)
{
result[row, col] += (dynamic)firstMatrix[row, i] * secondMatrix[i, col];
}
}
}
return(result);
}
public static void Main()
{
GenericMatrix <int> firstMatrix = new GenericMatrix <int>(3, 2);
firstMatrix[0, 0] = 1; // Filling the matrix
firstMatrix[0, 1] = 2;
firstMatrix[1, 0] = 3;
firstMatrix[1, 1] = 4;
firstMatrix[2, 0] = 5;
firstMatrix[2, 1] = 0;
Console.WriteLine("first matrix with zero element:\n");
Console.WriteLine(firstMatrix);
Console.Write("The matrix does not contain zero element: "); // Testing true / false
if (firstMatrix)
{
Console.WriteLine(true);
}
else
{
Console.WriteLine(false);
}
firstMatrix[0, 0] = 1; // Filling the matrix
firstMatrix[0, 1] = 2;
firstMatrix[1, 0] = 3;
firstMatrix[1, 1] = 4;
firstMatrix[2, 0] = 5;
firstMatrix[2, 1] = 6;
Console.WriteLine("\nfirst matrix without zero element:\n");
Console.WriteLine(firstMatrix);
Console.Write("The matrix does not contain zero element: ");
if (firstMatrix)
{
Console.WriteLine(true);
}
else
{
Console.WriteLine(false);
}
GenericMatrix <int> secondMatrix = new GenericMatrix <int>(3, 2);
secondMatrix[0, 0] = 10;
secondMatrix[0, 1] = 10;
secondMatrix[1, 0] = 10;
secondMatrix[1, 1] = 10;
secondMatrix[2, 0] = 10;
secondMatrix[2, 1] = 10;
Console.WriteLine("\nsecond matrix:\n");
Console.WriteLine(secondMatrix);
Console.WriteLine("first matrix + second matrix:\n");
Console.WriteLine(firstMatrix + secondMatrix); // Matrices addition
Console.WriteLine("first matrix - second matrix:\n");
Console.WriteLine(firstMatrix - secondMatrix); // Matrices subtraction
GenericMatrix <int> thirdMatrix = new GenericMatrix <int>(2, 4);
thirdMatrix[0, 0] = 10;
thirdMatrix[0, 1] = 10;
thirdMatrix[0, 2] = 10;
thirdMatrix[0, 3] = 10;
thirdMatrix[1, 0] = 10;
thirdMatrix[1, 1] = 10;
thirdMatrix[1, 2] = 10;
thirdMatrix[1, 3] = 10;
Console.WriteLine("third matrix:\n");
Console.WriteLine(thirdMatrix);
Console.WriteLine("second matrix * third matrix:\n");
Console.WriteLine(secondMatrix * thirdMatrix); // Matrices multiplication
}
