static void Main(string[] args)
{
Tree theTree = new Tree();
theTree.Insert(20);
theTree.Insert(25);
theTree.Insert(45);
theTree.Insert(15);
theTree.Insert(67);
theTree.Insert(43);
theTree.Insert(80);
theTree.Insert(33);
theTree.Insert(67);
theTree.Insert(99);
theTree.Insert(91);
Console.WriteLine("Inorder Traversal : ");
theTree.Inorder(theTree.ReturnRoot());
Console.WriteLine(" ");
Console.WriteLine();
Console.WriteLine("Preorder Traversal : ");
theTree.Preorder(theTree.ReturnRoot());
Console.WriteLine(" ");
Console.WriteLine();
Console.WriteLine("Postorder Traversal : ");
theTree.Postorder(theTree.ReturnRoot());
Console.WriteLine(" ");
Console.ReadLine();
}
public void traverse_tree_in_postorder_manner()
{
List <int> result = new List <int>();
Tree tree = new Tree(10);
tree.Insert(5);
tree.Insert(15);
tree.Insert(1);
tree.Insert(6);
tree.Postorder(x =>
{
result.Add(x);
});
Assert.Equal(5, result.Count);
Assert.Equal(1, result[0]);
Assert.Equal(6, result[1]);
Assert.Equal(5, result[2]);
Assert.Equal(15, result[3]);
Assert.Equal(10, result[4]);
}