public void DepthLimitedSearch(TileBoard inputBoard)
{
openNodes = new NodeDepthStack(27, false);
Start(inputBoard);
Console.WriteLine("Depth Limited Search: (with a depth limit of 27)");
solution.Print();
Console.WriteLine("----------------------------");
}
public void DepthFirstSearch(TileBoard inputBoard)
{
openNodes = new NodeStack();
Start(inputBoard);
Console.WriteLine("Depth First Search: ");
solution.Print();
Console.WriteLine("----------------------------");
}
public void BreadthFirstSearch(TileBoard inputBoard)
{
openNodes = new NodeQueue();
Start(inputBoard);
Console.WriteLine("Breadth First Search: ");
solution.Print();
Console.WriteLine("----------------------------");
}
public void IterativeDeepeningSearch(TileBoard inputBoard)
{
var dataStructure = new NodeDepthStack(1, true);
openNodes = dataStructure;
Start(inputBoard);
Console.WriteLine("Iterative Deepening Search: (Final depth was " + dataStructure.Depth + " )");
solution.Print();
Console.WriteLine("----------------------------");
}
public void BidirectionalSearch(TileBoard inputBoard)
{
bidirectional = true;
openNodes = new NodeQueue();
openNodesReverse = new NodeQueue();
Start(inputBoard);
Console.WriteLine("Bidirectional Search: ");
solution.Print();
Console.WriteLine("----------------------------");
bidirectional = false;
}
public BoardNode(BoardNode previous, TileBoard board, char TileMoved)
{
this.Previous = previous;
this.Board = board;
this.TileMoved = TileMoved;
if (previous == null)
{
Cost = 0;
}
else
{
Cost = previous.Cost + 1;
}
}
private void Start(TileBoard inputBoard)
{
//initialize new solution
solution = new Solution();
solution.StartBoard = inputBoard.Copy();
solution.StartTime();
//initialize new visited nodes table
visitedNodes = new Dictionary <string, BoardNode>();
//add input board to open node list
var startNode = new BoardNode(null, inputBoard, '!');
visitedNodes.Add(inputBoard.ToString(), startNode);
solution.ExpandedNodes++;
openNodes.Push(startNode);
//for bidirectional search, add end node to reverse open list
if (bidirectional)
{
var endBoard = new TileBoard("_12345678");
var endNode = new BoardNode(null, endBoard, '!');
endNode.Reverse = true;
visitedNodes.Add(endBoard.ToString(), endNode);
solution.ExpandedNodes++;
openNodesReverse.Push(endNode);
}
//start solving
while (true)
{
if (Solve())
{
break;
}
if (bidirectional)
{
if (Solve(true))
{
break;
}
}
}
}
static void Main(string[] args)
{
TileBoard tileBoard;
//if (DEBUG)
//{
// string filePath;
// if (args.Length == 0)
// filePath = "input.txt";
// else
// filePath = args[0];
// string input = "_12345678";
// try
// {
// var sr = new StreamReader(filePath);
// input = sr.ReadToEnd();
// input = input.Replace("\r\n", "");
// }
// catch (Exception e)
// {
// Console.WriteLine(e.Message);
// Console.ReadLine();
// return;
// }
// tileBoard = new TileBoard(input);
//}
//if (!DEBUG)
//{
//}
tileBoard = new TileBoard();
tileBoard.Randomize('_');
var searches = new Searches();
Console.WriteLine("==============================Breadth-First Search=========================");
Console.WriteLine("============================== ============================== ");
Console.WriteLine("============================== ============================== ");
Console.WriteLine("============================== ============================== ");
Console.WriteLine("============================== ============================== ");
searches.BreadthFirstSearch(tileBoard.Copy());
Console.WriteLine("==============================Depth-First Search=========================");
Console.WriteLine("============================== ============================== ");
Console.WriteLine("============================== ============================== ");
Console.WriteLine("============================== ============================== ");
Console.WriteLine("============================== ============================== ");
searches.DepthFirstSearch(tileBoard.Copy());
Console.WriteLine("==============================Uniform-Cost Search=========================");
Console.WriteLine("============================== ============================== ");
Console.WriteLine("============================== ============================== ");
Console.WriteLine("============================== ============================== ");
Console.WriteLine("============================== ============================== ");
UcsImplementation.Execute();
Console.WriteLine("==============================Depth-Limited Search=========================");
Console.WriteLine("============================== ============================== ");
Console.WriteLine("============================== ============================== ");
Console.WriteLine("============================== ============================== ");
Console.WriteLine("============================== ============================== ");
searches.DepthLimitedSearch(tileBoard.Copy());
Console.WriteLine("==============================Iterative-Deepening Search=========================");
Console.WriteLine("============================== ============================== ");
Console.WriteLine("============================== ============================== ");
Console.WriteLine("============================== ============================== ");
Console.WriteLine("============================== ============================== ");
searches.IterativeDeepeningSearch(tileBoard.Copy());
Console.WriteLine("==============================Bi-directional Search=========================");
Console.WriteLine("============================== ============================== ");
Console.WriteLine("============================== ============================== ");
Console.WriteLine("============================== ============================== ");
Console.WriteLine("============================== ============================== ");
searches.BidirectionalSearch(tileBoard.Copy());
Console.ReadLine();
}
public bool Equals(TileBoard otherBoard)
{
return(ToString().Equals(otherBoard.ToString()));
}
