private void trackBar1_ValueChanged(object sender, EventArgs e)
{
_problem = new Problems.QueensPuzzle(trackBar1.Value);
_currentState = new Problems.QueensPuzzle.State(Enumerable.Range(0, _problem.Size).Select(x => (x * 393342739) % _problem.Size).ToArray());
panel1.Invalidate();
}
public static List <int> GetPossibleActions(Problems.QueensPuzzle.State state)
{
var result = new List <int>();
var newPlacement = state.PlacementsCount;
for (var action = 0; action < state.ColumnPlacements.Length; action++)
{
var isAttacking = false;
for (var placement = 0; placement < newPlacement; placement++)
{
if (Problems.QueensPuzzle.State.IsAttacking(placement, state.ColumnPlacements[placement], newPlacement, action))
{
isAttacking = true;
break;
}
}
if (!isAttacking)
{
result.Add(action);
}
}
return(result.OrderBy(x => rnd.Next()).ToList());
}
public static Problems.QueensPuzzle.State ApplyAction(Problems.QueensPuzzle.State state, int action)
{
var copy = new int[state.ColumnPlacements.Length];
state.ColumnPlacements.CopyTo(copy, 0);
copy[state.PlacementsCount] = action;
return(new Problems.QueensPuzzle.State(copy));
}
private void button1_Click(object sender, EventArgs e)
{
var i = 0;
while (true)
{
_currentState = new Problems.QueensPuzzle.State(
Enumerable.Range(0, _problem.Size)
.Select(x => _random.Next(_problem.Size)).ToArray());
if (++i % 500000 == 0 || _currentState.AttackCount == 0)
{
panel1.Invalidate();
Application.DoEvents();
}
if (_currentState.AttackCount == 0) break;
}
}
private void button1_Click(object sender, EventArgs e)
{
var i = 0;
while (true)
{
_currentState = new Problems.QueensPuzzle.State(
Enumerable.Range(0, _problem.Size)
.Select(x => _random.Next(_problem.Size)).ToArray());
if (++i % 500000 == 0 || _currentState.AttackCount == 0)
{
panel1.Invalidate();
Application.DoEvents();
}
if (_currentState.AttackCount == 0)
{
break;
}
}
}
private void button2_Click(object sender, EventArgs e)
{
var initialState = Enumerable.Range(0, _problem.Size).Select(x => - 1).ToArray();
var tree = new SearchTree <Problems.QueensPuzzle.State>(_problem.CreateState(initialState));
var dfs = new DepthFirstSearcher <Problems.QueensPuzzle.State, int>(
tree,
GetPossibleActions,
ApplyAction,
(x, a) => 1,
x => x.IsSolution);
var updateCount = 0;
var start = DateTime.Now;
Action <bool> updateCounts = (force) =>
{
if (!force && ++updateCount % 10000 > 0)
{
return;
}
NodesGeneratedLabel.Text = "Generated = " + dfs.NodesGeneratedCount + " ";
ExpandedNodesLabel.Text = "Expanded = " + dfs.NodesExpandedCount + " ";
RetainedNodesLabel.Text = "Retained = " + dfs.NodesRetainedCount + " ";
SecondsLabel.Text = DateTime.Now.Subtract(start).TotalSeconds.ToString();
_currentState = dfs.CurrentNode.Data;
panel1.Invalidate();
Application.DoEvents();
};
dfs.NodeExpanded += (s, a) => updateCounts(false);
dfs.NodeGenerated += (s, a) => updateCounts(false);
var solution = dfs.Search();
updateCounts(true);
}
private void button2_Click(object sender, EventArgs e)
{
var initialState = Enumerable.Range(0, _problem.Size).Select(x => -1).ToArray();
var tree = new SearchTree<Problems.QueensPuzzle.State>(_problem.CreateState(initialState));
var dfs = new DepthFirstSearcher<Problems.QueensPuzzle.State, int>(
tree,
GetPossibleActions,
ApplyAction,
(x, a) => 1,
x => x.IsSolution);
var updateCount = 0;
var start = DateTime.Now;
Action<bool> updateCounts = (force) =>
{
if (!force && ++updateCount % 10000 > 0) return;
NodesGeneratedLabel.Text = "Generated = " + dfs.NodesGeneratedCount + " ";
ExpandedNodesLabel.Text = "Expanded = " + dfs.NodesExpandedCount + " ";
RetainedNodesLabel.Text = "Retained = " + dfs.NodesRetainedCount + " ";
SecondsLabel.Text = DateTime.Now.Subtract(start).TotalSeconds.ToString();
_currentState = dfs.CurrentNode.Data;
panel1.Invalidate();
Application.DoEvents();
};
dfs.NodeExpanded += (s,a) => updateCounts(false);
dfs.NodeGenerated += (s, a) => updateCounts(false);
var solution = dfs.Search();
updateCounts(true);
}
private void trackBar1_ValueChanged(object sender, EventArgs e)
{
_problem = new Problems.QueensPuzzle(trackBar1.Value);
_currentState = new Problems.QueensPuzzle.State(Enumerable.Range(0, _problem.Size).Select(x => (x * 393342739) % _problem.Size).ToArray());
panel1.Invalidate();
}
