public void PostOrderTraversal()
{
if (LeftNode != null)
{
LeftNode.PostOrderTraversal();
}
if (RightNode != null)
{
RightNode.PostOrderTraversal();
}
Console.Write($"{Data}, ");
}
static void Main(string[] args)
{
InitializeTree();
Console.WriteLine("\n\nIn-order traversal: ");
tree.InOrderTraversal();
Console.WriteLine("\n\nPre-order traversal: ");
tree.PreOrderTraversal();
Console.WriteLine("\n\nPost-order traversal: ");
tree.PostOrderTraversal();
Console.Write($"\n\nTree contains {18}: {tree.Contains(18)}");
var node = tree.FindRecursive(10);
Console.Write($"\n\nFind node recursively: {node.Data} || Count: {node.Count}");
Console.Write($"\n\nFind node non-recursively: {tree.Find(66).Data}");
Console.ReadLine();
}