public Map()
{
squareList = new List<Square>(columnNum * rowNum);
for (int row = 0; row < rowNum; row++)
{
for (int col = 0; col < columnNum; col++)
{
Square s = new Square(row, col);
squareList.Add(s);
}
}
foreach (Square s in squareList)
{
s.Peers = squareList.FindAll(obj => (obj.Column == s.Column || obj.Row == s.Row || s.IsInOneUnit(obj)));
s.Peers.Remove(s);
}
}
public bool IsInOneUnit(Square obj)
{
return (obj.Column * 3 / 9 == Column * 3 / 9
&& obj.Row * 3 / 9 == Row * 3 / 9);
}