private void button2_Click(object sender, EventArgs e)
{
for (int i = 0; i < drawWindowsList.Count; i++)
{
drawWindowsList[i].Close();
}
drawWindowsList.Clear();
OutBox.Clear();
}
private void CauchyButton_Click(object sender, EventArgs e)
{
leftBorder = Convert.ToDouble(LeftBorderBox.Text);
rightBorder = Convert.ToDouble(RightBorderBox.Text);
double[] x = new Double[2];
x.SetValue(Convert.ToDouble(x0Box.Text), 0);
x.SetValue(Convert.ToDouble(x1Box.Text), 1);
double eps = Convert.ToDouble(EpsilonBox.Text);
double h = Convert.ToDouble(StepBox.Text);
OutBox.Clear();
OutBox.AppendText(Grad(x, eps, h));
}
private void StartButton_Click(object sender, EventArgs e)
{
OutBox.Clear();
List <Attribute> matrixAttr = new List <Attribute>();
int x = 0;
int y = 0;
double min = 0;
double[,] A1;
x = int.Parse(Xbox.Text);
y = int.Parse(Ybox.Text);
A1 = new double[x, y];
for (int i = 0, index = 0; i < x; i++)
{
for (int j = 0; j < y; j++, index++)
{
A1[i, j] = parseElement(index);
}
}
for (int i = y - x, count = 0; i < y; count++, i++)
{
matrixAttr.Add(new Attribute()
{
value = A1[count, y - 1]
});
if (i == y - 1)
{
matrixAttr[count].name = "P";
}
else
{
matrixAttr[count].name = "x" + i;
}
}
do
{
min = 0;
int colPosition = 0;
// Find min element in last line and set colPosition
for (int i = 0; i < y; i++)
{
if (A1[x - 1, i] < 0 && min > A1[x - 1, i])
{
min = A1[x - 1, i];
colPosition = i;
}
}
double[] tempArray = new double[x - 1];
// A1[Last col] / A1[colPosition]
for (int i = 0; i < tempArray.Length; i++)
{
tempArray[i] = A1[i, y - 1] / A1[i, colPosition];
}
min = tempArray[0];
int rawPosition = 0;
// Find min element and set rawPosition
for (int i = 0; i < tempArray.Length; i++)
{
if (min > tempArray[i])
{
min = tempArray[i];
rawPosition = i;
}
}
double num = A1[rawPosition, colPosition];
// A1[rawPosition] / A1[rawPosition, colPosition]
for (int i = 0; i < y; i++)
{
A1[rawPosition, i] = A1[rawPosition, i] / num;
}
// A1[raws] - A1[rawPosition] * A1[colPosition]
for (int i = 0; i < x - 1; i++)
{
if (i != rawPosition)
{
num = A1[i, colPosition];
for (int j = 0; j < y; j++)
{
A1[i, j] = A1[i, j] - A1[rawPosition, j] * Math.Abs(num);
}
}
}
num = A1[x - 1, colPosition];
// A1[Last raw] + A1[rawPosition] * A1[colPosition]
for (int i = 0; i < y; i++)
{
A1[x - 1, i] = A1[x - 1, i] + A1[rawPosition, i] * Math.Abs(num);
}
// Change values and rawPosition.name beacause of new basic solution
for (int i = 0; i < x; i++)
{
matrixAttr[i].value = A1[i, y - 1];
if (i == rawPosition)
{
matrixAttr[i].name = "x" + i;
}
}
// Repeat?
min = 0;
for (int i = 0; i < y; i++)
{
if (A1[x - 1, i] < 0 && min > A1[x - 1, i])
{
min = A1[x - 1, i];
}
}
} while (min < 0);
// Sort by Name column
matrixAttr.Sort((a, b) => {
if (a.name != "P" && b.name != "P")
{
return(a.name.CompareTo(b.name));
}
return(0);
});
// And print out
for (int i = 0; i < x; i++)
{
OutBox.AppendText(matrixAttr[i].name + " = " + matrixAttr[i].value + "\n");
}
}