private static void Queens(Int32 rowIndex, List <Int32> cols, List <Int32> diag45, List <Int32> diag135, List <Int32> tuples)
{
if (rowIndex == size)
{
TupleCollection.Instance().Collection.Add(new List <Int32>(tuples));
TupleCollection.Instance().PromisingTupleCounters.Add(promisingTupleCounter);
}
else
{
for (int i = 0; i < size; i++)
{
if (!cols.Exists(x => x == i) && !diag45.Exists(x => x == (i - rowIndex)) && !diag135.Exists(x => x == (i + rowIndex)))
{
tuples.Add(i);
cols.Add(i);
diag45.Add(i - rowIndex);
diag135.Add(i + rowIndex);
promisingTupleCounter++;
Queens(rowIndex + 1, cols, diag45, diag135, tuples);
tuples.RemoveAt(tuples.Count - 1);
cols.RemoveAt(cols.Count - 1);
diag45.RemoveAt(diag45.Count - 1);
diag135.RemoveAt(diag135.Count - 1);
}
}
}
}
public static TupleCollection Instance()
{
if (_instance == null)
{
_instance = new TupleCollection();
}
return(_instance);
}
static void Main(string[] args)
{
String input;
do
{
input = String.Empty;
size = 0;
promisingTupleCounter = 0;
TupleCollection.Instance().Collection.Clear();
TupleCollection.Instance().PromisingTupleCounters.Clear();
Console.WriteLine("================= Algo Reines =================\n");
Console.WriteLine("(Vous pouvez appuyer sur la touche 'Q' pour quitter)\n");
do
{
Console.Write("Veuillez saisir le nombre de rangées/colonnes du plateau (entre 1 et 10): ");
input = Console.ReadLine();
} while (!input.Equals("q", StringComparison.InvariantCultureIgnoreCase) && (!Int32.TryParse(input, out size) || size <= 0 || size > 10));
if (input.Equals("q", StringComparison.InvariantCultureIgnoreCase))
{
break;
}
Queens(0, new List <Int32>(), new List <Int32>(), new List <Int32>(), new List <Int32>());
Console.WriteLine("\nNombre de solutions trouvées: {0}\n", TupleCollection.Instance().Collection.Count);
if (TupleCollection.Instance().Collection.Count != 0)
{
do
{
Console.Write("Veuillez saisir le nombre de solutions à afficher: ");
input = Console.ReadLine();
} while (!input.Equals("q", StringComparison.InvariantCultureIgnoreCase) && (!Int32.TryParse(input, out show) || show <= 0 || show > TupleCollection.Instance().Collection.Count));
if (input.Equals("q", StringComparison.InvariantCultureIgnoreCase))
{
break;
}
Console.WriteLine();
for (int i = 0; i < show; i++)
{
Show(i);
}
}
Console.Write("Nombre total de tuples prometteurs: {0}\n", promisingTupleCounter);
input = Console.ReadLine();
} while (!input.Equals("q", StringComparison.InvariantCultureIgnoreCase));
}
private static void Show(int element)
{
string table;
table = "";
for (int k = 0; k < ((size * 2) + 1); k++)
{
table += "-";
}
table += "\n";
for (int j = 1; j < ((size * 2) + 1); j++)
{
if (table[table.Length - 2] == '|')
{
for (int k = 0; k < ((size * 2) + 1); k++)
{
table += "-";
}
table += "\n";
}
else
{
table += "|";
for (int k = 0; k < size; k++)
{
if (TupleCollection.Instance().Collection.ElementAt(element)[((j - 1) / 2)] == k)
{
table += "R|";
}
else
{
table += " |";
}
}
table += "\n";
}
}
Console.Write(table);
Console.Write("Trouvé après {0} tuples prometteurs\n", TupleCollection.Instance().PromisingTupleCounters.ElementAt(element));
Console.WriteLine();
}
