public Models.Matrix Build()
{
Models.Matrix m = new Models.Matrix(_rows.ToArray());
_rows = new List<Row>();
return m;
}
public static Models.Matrix TransposeMatrix(Models.Matrix mat)
{
Models.Matrix matResult = new Models.Matrix(mat.Rows, mat.Columns);
for (int i = 0; i < mat.Rows; i++)
{
for (int j = 0; j < mat.Columns; j++)
{
matResult[j, i] = mat[i, j];
}
}
return(matResult);
}
public static Models.Matrix CreateRandomMatrixInt(int rows, int columns)
{
Models.Matrix matResult = new Models.Matrix(rows, columns);
for (int i = 0; i < rows; i++)
{
for (int j = 0; j < columns; j++)
{
matResult[i, j] = GenerarNumero();
}
}
return(matResult);
}
public static double DeterminantMatrix(Models.Matrix mat)
{
if (!mat.IsSquared)
{
throw new InvalidOperationException("La matriz debe ser cuadrada.");
}
if (mat.Rows == 1 && mat.Columns == 1)
{
return(mat[0, 0]);
}
double determinante = 0;
double aux = 0;
int c;
if (mat.Rows == 2 && mat.Columns == 2)
{
return(mat[0, 0] * mat[1, 1] - mat[1, 0] * mat[0, 1]);
}
else
{
for (int j = 0; j < mat.Rows; j++)
{
Models.Matrix menor = new Models.Matrix(mat.Rows - 1, mat.Columns - 1);
for (int k = 1; k < mat.Rows; k++)
{
c = 0;
for (int l = 0; l < mat.Rows; l++)
{
if (l != j)
{
menor[k - 1, c] = mat[k, l];
c++;
}
}
}
aux = Math.Pow(-1, 2 + j) * mat[0, j] * DeterminantMatrix(menor);
determinante += aux;
}
}
return(determinante);
}
