static void Main(string[] args)
{
int rowsMatrixA = RequestNumber("number of rows for 1 matrix");
int colsMatrixA = RequestNumber("number of columns for 1 matrix");
int rowsMatrixB = colsMatrixA;
int colsMatrixB = RequestNumber("number of columns for 2 matrix");
MatrixMultiplier multiplier = new MatrixMultiplier();
int[][] matrixA = MatrixUtils.CreateMatrix(rowsMatrixA, colsMatrixA, false);
Console.WriteLine("First Matrix:");
MatrixUtils.PrintMatrix(matrixA);
int[][] matrixB = MatrixUtils.CreateMatrix(rowsMatrixB, colsMatrixB, false);
Console.WriteLine("Second Matrix:");
MatrixUtils.PrintMatrix(matrixB);
try
{
int[][] result = multiplier.Multiply(matrixA, matrixB);
Console.WriteLine("Matrix Product:");
MatrixUtils.PrintMatrix(result);
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
Console.ReadKey();
}
public int[][] Multiply(int[][] matrixA, int[][] matrixB)
{
int rowsA = matrixA.Length;
int rowsB = matrixB.Length;
int colsA = matrixA[0].Length;
int colsB = matrixB[0].Length;
if (colsA != rowsB)
{
throw new ArgumentException("Theese matrices can not be multiplied");
}
int[][] result = MatrixUtils.CreateMatrix(rowsA, colsB, true);
Parallel.For(0, rowsA, i =>
{
Parallel.For(0, colsB, j =>
{
int[] col = matrixB.Select(row => row[j]).ToArray();
result[i][j] = VectorProduct(matrixA[i], col);
});
});
return(result);
}
