static void Main(string[] args)
{
var tree = new Tree <double>(10.0f);
Console.WriteLine(tree.Print());
tree.AddLeft(5);
Console.WriteLine(tree.Print());
tree.AddRight(15);
Console.WriteLine(tree.Print());
tree.FindNode(new Tree <double>(5)).AddLeft(2);
Console.WriteLine(tree.Print());
tree.FindNode(new Tree <double>(5)).AddRight(7);
Console.WriteLine(tree.Print());
tree.Delete(new Tree <double>(7));
Console.WriteLine(tree.Print());
var a = tree.FindNode(new Tree <double>(2));
Console.WriteLine(a.Print());
Console.ReadKey();
}