static void EveryKOnSizesFrom3To10()
{
SystemOfLinearEquations SoLE;
TridiagonalMatrix m;
Vector f, xAccurate;
double error;
for (int n = 3; n <= 10; ++n)
{
xAccurate = new Vector(n);
xAccurate.FillRandomly(1, 9);
for (int k = 1; k <= n - 2; ++k)
{
m = new TridiagonalMatrix(n);
m.FillRandomly(1, 10, k);
f = m * xAccurate;
SoLE = new SystemOfLinearEquations(m, f);
try
{
error = (SoLE.Solve() - xAccurate).Norm();
Console.WriteLine("n = " + n + ", k = " + k + ", погрешность: " + error);
}
catch (DivideByZeroException)
{
--k;
}
}
}
}
static void MeanErrorMode()
{
SystemOfLinearEquations SoLE;
TridiagonalMatrix m;
Vector f, xAccurate;
double error, sumError, maxError;
Console.WriteLine("Введите количество итераций для каждой размерности матрицы:");
int numOfTests = Convert.ToInt32(Console.ReadLine());
Console.WriteLine();
StringBuilder sB = new StringBuilder();
sB.Append(" Размерность\t|\tСредняя погрешность\t|\tМаксимальная погрешность" + Environment.NewLine);
int numOfSpaces = 13;
for (int i = 10; i <= 100000; i *= 10)
{
sumError = 0;
maxError = -1;
for (int j = 1; j <= numOfTests; ++j)
{
m = new TridiagonalMatrix(i);
m.FillRandomly(1, 99);
xAccurate = new Vector(i);
xAccurate.FillRandomly(1, 99);
f = m * xAccurate;
SoLE = new SystemOfLinearEquations(m, f);
try
{
error = (SoLE.Solve() - xAccurate).Norm();
sumError += error;
if (error > maxError)
{
maxError = error;
}
}
catch (DivideByZeroException)
{
--j;
}
}
sB.Append(" " + i);
sB.Insert(sB.Length, " ", numOfSpaces--);
sB.Append("| " + sumError / numOfTests + "\t| " + maxError + Environment.NewLine);
}
Console.WriteLine(sB.ToString());
}
static void GiganticSizeWithBigNumbers()
{
SystemOfLinearEquations SoLE;
TridiagonalMatrix m;
Vector f, xAccurate;
xAccurate = new Vector(50000000);
xAccurate.FillRandomly(1, 10000);
m = new TridiagonalMatrix(50000000);
m.FillRandomly(1, 10000);
f = m * xAccurate;
SoLE = new SystemOfLinearEquations(m, f);
Console.WriteLine("Погрешность: " + (SoLE.Solve() - xAccurate).Norm());
}
static void MatrixWithLargeNumbersOnDiagonalAndKodiagonalVectors()
{
SystemOfLinearEquations SoLE;
TridiagonalMatrix m;
Vector f, xAccurate;
double sumError, maxError, error;
int numOfTests;
int numOfSpaces = 12;
Random rnd = new Random();
Console.WriteLine("Введите количество итераций для каждой размерности матрицы:");
numOfTests = Convert.ToInt32(Console.ReadLine());
StringBuilder sB = new StringBuilder();
sB.Append(" Размерность\t|\tСредняя погрешность\t|\tМаксимальная погрешность" + Environment.NewLine);
for (int i = 10; i <= 100; i += 10)
{
sumError = 0;
maxError = -1;
for (int j = 1; j <= numOfTests; ++j)
{
Vector a = new Vector(i);
Vector b = new Vector(i);
Vector c = new Vector(i);
a.FillRandomly(1, 100);
b.FillRandomly(1, 100);
c.FillRandomly(100, 400);
m = new TridiagonalMatrix(a, b, c, 1, 100, rnd.Next(1, a.Size - 1));
xAccurate = new Vector(i);
xAccurate.FillRandomly(1, 99);
f = m * xAccurate;
SoLE = new SystemOfLinearEquations(m, f);
try
{
error = (SoLE.Solve() - xAccurate).Norm();
sumError += error;
if (error > maxError)
{
maxError = error;
}
}
catch (DivideByZeroException)
{
--j;
}
}
sB.Append(" " + i);
sB.Insert(sB.Length, " ", numOfSpaces);
sB.Append("| " + sumError / numOfTests + "\t| " + maxError + Environment.NewLine);
// Console.WriteLine("Введите размерность матриц:");
//int Size = Convert.ToInt32(Console.ReadLine());
//xAccurate = new Vector(Size);
//xAccurate.FillRandomly(1, 100);
////Vector a = new Vector(Size);
////Vector b = new Vector(Size);
////Vector c = new Vector(Size);
//a.FillRandomly(1, 100);
//b.FillRandomly(400, 999);
//c.FillRandomly(1, 100);
//m = new TridiagonalMatrix(a, b, c, 1, 100, -1);
//f = m * xAccurate;
//SoLE = new SystemOfLinearEquations(m, f);
//Console.WriteLine("Погрешность СЛАУ с большими числами на главной диагонали: " + (SoLE.Solve() - xAccurate).Norm());
//b.FillRandomly(1, 100);
//c.FillRandomly(100, 200);
//m = new TridiagonalMatrix(a, b, c, 1, 100, -1);
//f = m * xAccurate;
//SoLE = new SystemOfLinearEquations(m, f);
//Console.WriteLine("Погрешность СЛАУ с большими числами на верхней кодиагонали: " + (SoLE.Solve() - xAccurate).Norm());
//a.FillRandomly(100, 200);
//c.FillRandomly(1, 100);
//m = new TridiagonalMatrix(a, b, c, 1, 100, -1);
//f = m * xAccurate;
//SoLE = new SystemOfLinearEquations(m, f);
//Console.WriteLine("Погрешность СЛАУ с большими числами на нижней кодиагонали: " + (SoLE.Solve() - xAccurate).Norm());
}
Console.WriteLine(sB.ToString());
}