/// <summary>
/// Convert collection to sudoku.
/// </summary>
/// <param name="source">Collection souce.</param>
/// <returns>A sudoku.</returns>
public static BrickNode[,] ToSudoku(this IEnumerable <BrickNode> source)
{
BrickNode[,] nodes = null;
if (source != null && source.Any())
{
nodes = new BrickNode[Constants.RowCount, Constants.ColumnCount];
for (int i = 0; i < source.Count(); i++)
{
if ((i + 1) > (Constants.RowCount * Constants.ColumnCount))
{
return(nodes);
}
else
{
int row = i / Constants.RowCount;
int column = i - row * Constants.RowCount;
nodes[row, column] = source.ElementAt(i);
}
}
}
return(nodes);
}
/// <summary>
/// Create empty general style sudoku.
/// </summary>
/// <returns>Empty sudoku.</returns>
public static BrickNode[,] CreateGeneralSudoku()
{
BrickNode[,] nodes = new BrickNode[Constants.RowCount, Constants.ColumnCount];
for (int i = 0; i < Constants.RowCount; i++)
{
for (int j = 0; j < Constants.ColumnCount; j++)
{
nodes[i, j].Kind = BrickKind.General;
}
}
return(nodes);
}
/// <summary>
/// Transform brick node collection, if node's value is bigger than 0, then make all nodes' kind to Original.
/// </summary>
/// <param name="source">Brick node collection.</param>
/// <returns>Original kind Brick node collection.</returns>
public static BrickNode[,] TransformOriginal(BrickNode[,] source)
{
BrickNode[,] nodes = new BrickNode[Constants.RowCount, Constants.ColumnCount];
for (int i = 0; i < Constants.RowCount; i++)
{
for (int j = 0; j < Constants.ColumnCount; j++)
{
if (source[i, j].Number > 0)
{
nodes[i, j].Kind = BrickKind.Original;
}
else
{
nodes[i, j].Kind = BrickKind.General;
}
nodes[i, j].Number = source[i, j].Number;
}
}
return(nodes);
}