Question

我有一个2x2和一个2x1矩阵，想要乘以它们。这是代码。

 for (i = 0; i < row; i++)
        {
            for (j = 0; j < col; j++)
            {
                for (k = 0; k < 2; k++)
                {
                    mulMatrix[k] = Mat1[i, j] * Mat2[j];
                }
            }
        }

Answer 1

我认为.NET已经有了这个库。请在此处阅读：https://msdn.microsoft.com/en-us/library/system.windows.media.matrix.multiply(v=vs.110).aspx

基本上，例子是：

private void multiplicationExample()
{

    Matrix matrix1 = new Matrix(5, 10, 15, 20, 25, 30);
    Matrix matrix2 = new Matrix(2, 4, 6, 8, 10, 12);

    // matrixResult is equal to (70,100,150,220,240,352) 
    Matrix matrixResult = Matrix.Multiply(matrix1, matrix2);

    // matrixResult2 is also
    // equal to (70,100,150,220,240,352) 
    Matrix matrixResult2 = matrix1 * matrix2;


}

Answer 2

试试math.net。这是一个例子：

var matrixA = DenseMatrix.OfArray(new[,] { { 1.0, 2.0 }, { 4.0, 5.0 } });
var matrixB = DenseMatrix.OfArray(new[,] { { 1.0 }, { 2.0 } });

var result = matrixA * matrixB;
Console.WriteLine(result);

See this .NET Fiddle

矩阵乘法2x2 2x1 C＃

2 个答案: