public void AngleList()
{
DoublyLinkedList linkedList2 = new DoublyLinkedList();
if (First == null)
{
Console.WriteLine("Список пуст");
return;
}
Current = First;
while (Current != null)
{
string s = Current.Value.ToString();
string[] s_2 = s.Split(';');
double len = Math.Atan((Convert.ToDouble(s_2[3]) -
Convert.ToDouble(s_2[1])) / (Convert.ToDouble(s_2[2]) - Convert.ToDouble(s_2[0])));
if ((len == 30) || (len == 45))
{
linkedList2.Push_Back(s);
}
Current = Current.Next;
}
linkedList2.Show();
}