private void btnShowUnsolvedBoard_Click(object sender, RoutedEventArgs e)
{
int sz = Convert.ToInt32(txtSz.Text);
int[] bd = new int[sz];
for (int i = 0; i < sz; i++)
{
bd[i] = i;
}
QueensGUI theWindow = new QueensGUI(bd);
theWindow.Owner = this;
theWindow.Show();
theWindow.RefreshQueenPositions();
}
/// <summary>
/// Find and return one random solution to the NxN queens problem.
/// </summary>
/// <param name="N"></param>
/// <returns></returns>
private int[] findQueensSolution(int N)
{
// set up the initial board of the correct size
int[] bd = new int[N];
for (int i = 0; i < N; i++)
{
bd[i] = i;
}
bool wantGUI = cbShowBoard.IsChecked.Value == true;
bool wantAnimation = wantGUI && cbAnimated.IsChecked.Value == true;
QueensGUI theWindow = null;
if (wantGUI)
{
theWindow = new QueensGUI(bd);
theWindow.Owner = this;
theWindow.Show();
}
int tries = 1;
while (boardHasDiagonalClashes(bd))
{
shuffle(bd);
if (wantAnimation)
{
theWindow.RefreshQueenPositions();
}
tries++;
}
if (wantGUI)
{
theWindow.RefreshQueenPositions();
}
tot += tries;
txtResults.AppendText(string.Format("Solution {0} found in {1} tries.\n", stringify(bd), tries));
txtResults.ScrollToEnd();
return(bd);
}