public static void UnableToSolveSingularMatrix()
{
// Arrange
var solver = new GaussJordanElimination();
var input = new double[, ] {
{ 0, 0, 0 }, { 0, 0, 0 }
};
// Act
var result = solver.Solve(input);
// Assert
Assert.IsFalse(result);
}
public static void NonSquaredMatrixThrowsException()
{
// Arrange
var solver = new GaussJordanElimination();
var input = new double[, ] {
{ 2, -1, 5 }, { 0, 2, 1 }, { 3, 17, 7 }
};
// Act
void Act() => solver.Solve(input);
// Assert
_ = Assert.Throws <ArgumentException>(Act);
}
/// <summary>
/// Finds the inverse of the given matrix using a linear equation solver.
/// </summary>
/// <param name="vector">Splitted words vector.</param>
/// <param name="key">Key used for the cipher.</param>
/// <returns></returns>
private double[] MatrixDeCipher(double[] vector, double[,] key)
{
// To augment the original key with the given vector.
var augM = new double[3, 4];
for (var i = 0; i < key.GetLength(0); i++)
{
for (var j = 0; j < key.GetLength(1); j++)
{
augM[i, j] = key[i, j];
}
}
for (var k = 0; k < vector.Length; k++)
{
augM[k, 3] = vector[k];
}
_ = LinearEquationSolver.Solve(augM);
return(new[] { augM[0, 3], augM[1, 3], augM[2, 3] });
}
/// <summary>Solves the linear equation system. If the system has no solution, the result is undefined.</summary>
public void Solve()
{
GaussJordanElimination.Solve(Matrix, RightHandSide, Solution);
}