private void Button1_Click(object sender, EventArgs e)
{
int n;
if (!CheckDataInput(out n))
{
MessageBox.Show("Введено неверное значение. Введите 2, 4 или 6", "Ошибка ввода", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
return;
}
dataGridView1.RowCount = n;
dataGridView1.ColumnCount = n;
for (int i = 0; i < n; i++)
{
dataGridView1.Columns[i].Width = 50;
dataGridView1.Rows[i].Height = 50;
}
;
ClearCells(n);
Matr mass = new Matr(n);
Fishki fishki = new Fishki();
List <Index> index_list = new List <Index>();
MatrToGrid(n, mass);
Main(ref mass, ref fishki, ref index_list);
PaintCellAsync(index_list);
}
private void MatrToGrid(int n, Matr mass)
{
for (int i = 0; i < n; i++)
{
for (int j = 0; j < n; j++)
{
dataGridView1.Rows[i].Cells[j].Value = mass[i, j].Value;
}
}
}
static private void NextStep(Matr mass)
{
for (int i = 0; i < mass.Size; i++)
{
for (int j = 0; j < mass.Size; j++)
{
if (mass[i, j].IsUsed == false)
{
x = i; y = j;
return;
}
}
}
}
static private bool IsAllCellsFill(Matr mass)
{
for (int i = 0; i < mass.Size; i++)
{
for (int j = 0; j < mass.Size; j++)
{
if (!mass[i, j].IsUsed)
{
return(false);
}
}
}
return(true);
}
private void Main(ref Matr mass, ref Fishki fishki, ref List <Index> index_list)
{
int i = 0;
int j = 0;
bool res = Domino.backtrack(i, j, ref mass, ref fishki, ref index_list);
if (res)
{
textBox2.Text = "Успешно";
}
else
{
textBox2.Text = "Неудача";
}
}
static public bool backtrack(int i, int j, ref Matr mass, ref Fishki fishki, ref List <Index> index_list)
{
bool added = false;
//Движение вправо
if (j + 1 < mass.Size)
{
if (mass[i, j].IsUsed == false && mass[i, j + 1].IsUsed == false)
{
if (IsFishkaExist(ref fishki, mass[i, j].Value, mass[i, j + 1].Value) == true)
{
mass[i, j + 1].IsUsed = true;
mass[i, j].IsUsed = true;
index_list.Add(new Index(i, j, i, j + 1));
NextStep(mass);
backtrack(x, y, ref mass, ref fishki, ref index_list);
added = true;
}
}
}
//Движение влево
if (j - 1 >= 0)
{
if (mass[i, j].IsUsed == false && mass[i, j - 1].IsUsed == false)
{
if (IsFishkaExist(ref fishki, mass[i, j].Value, mass[i, j - 1].Value) == true)
{
if (!added)
{
mass[i, j - 1].IsUsed = true;
mass[i, j].IsUsed = true;
}
index_list.Add(new Index(i, j, i, j - 1));
NextStep(mass);
backtrack(x, y, ref mass, ref fishki, ref index_list);
added = true;
}
}
}
//Движение вверх
if (i + 1 < mass.Size)
{
if (mass[i, j].IsUsed == false && mass[i + 1, j].IsUsed == false)
{
if (IsFishkaExist(ref fishki, mass[i, j].Value, mass[i + 1, j].Value) == true)
{
if (!added)
{
mass[i + 1, j].IsUsed = true;
mass[i, j].IsUsed = true;
}
index_list.Add(new Index(i, j, i + 1, j));
NextStep(mass);
backtrack(x, y, ref mass, ref fishki, ref index_list);
added = true;
}
}
}
//Движение вниз
if (i - 1 >= 0)
{
if (mass[i, j].IsUsed == false && mass[i - 1, j].IsUsed == false)
{
if (IsFishkaExist(ref fishki, mass[i, j].Value, mass[i - 1, j].Value) == true)
{
if (!added)
{
mass[i - 1, j].IsUsed = true;
mass[i, j].IsUsed = true;
}
index_list.Add(new Index(i, j, i - 1, j));
NextStep(mass);
backtrack(x, y, ref mass, ref fishki, ref index_list);
added = true;
}
}
}
if (IsAllCellsFill(mass))
{
return(true);
}
return(false);
}