static void Main(string[] args)
{
var parent = new TreeNode <int> {
Value = 1
};
var left1 = parent.AddLeftChild(2);
var right1 = parent.AddRightChild(3);
left1.AddLeftChild(4);
left1.AddRightChild(5);
right1.AddLeftChild(6);
right1.AddRightChild(7);
Console.WriteLine("In Order");
TreeNode <int> .InOrder(parent);
Console.WriteLine();
Console.WriteLine("Pre Order");
TreeNode <int> .PreOrder(parent);
Console.WriteLine();
Console.WriteLine("Post Order");
TreeNode <int> .PostOrder(parent);
Console.WriteLine();
Console.WriteLine("DFS");
TreeNode <int> .DepthFirstSearch(parent);
Console.WriteLine("BFS");
TreeNode <int> .BreadthFirstSearch(parent);
Console.ReadLine();
}
