C#如何对二维数组矩阵进行算术运算

int[,] matrix1 = new int[,]
{
    {1, 2, 3},
    {4, 5, 6},
    {7, 8, 9}
};

int[,] matrix2 = new int[,]
{
    {9, 8, 7},
    {6, 5, 4},
    {3, 2, 1}
};

int rows = matrix1.GetLength(0);
int cols = matrix1.GetLength(1);

int[,] resultMatrix = new int[rows, cols];

for (int i = 0; i < rows; i++)
{
    for (int j = 0; j < cols; j++)
    {
        resultMatrix[i, j] = matrix1[i, j] + matrix2[i, j]; // 进行算术运算，这里以加法为例
    }
}

using MathNet.Numerics.LinearAlgebra;

Matrix<double> matrix1 = DenseMatrix.OfArray(new double[,]
{
    {1, 2, 3},
    {4, 5, 6},
    {7, 8, 9}
});

Matrix<double> matrix2 = DenseMatrix.OfArray(new double[,]
{
    {9, 8, 7},
    {6, 5, 4},
    {3, 2, 1}
});

Matrix<double> resultMatrix = matrix1 * matrix2; // 矩阵乘法

// 输出结果
Console.WriteLine(resultMatrix);