public void Draw()
{
Console.ForegroundColor = ConsoleColor.Green;
Console.SetCursorPosition(Tail[0, 0], Tail[0, 1]);
Console.Write("0");
Console.ForegroundColor = ConsoleColor.White;
for (Int32 i = 1; i < xLen; i++)
{
Console.SetCursorPosition(Tail[i, 0], Tail[i, 1]);
Console.Write("o");
}
}