public void AnswerQuestion()
{
var n1 = new Node <int>(1);
var n2 = new Node <int>(2);
var n3 = new Node <int>(3);
var n4 = new Node <int>(4);
var n5 = new Node <int>(5);
var n6 = new Node <int>(6);
var n7 = new Node <int>(7);
var n8 = new Node <int>(8);
n2.AddChild(n1);
n2.AddChild(n3);
n4.AddChild(n2);
n5.AddChild(n4);
n5.AddChild(n6);
n7.AddChild(n8);
n5.AddChild(n7);
var tree = new GenericTree <int>();
tree.Root = n5;
tree.PrintByLevel();
}