static void Main(string[] args)
{
int[] arr = new int[8] {
5, 4, 9, 3, 10, 0, -1, 9
};
BST bst = new BST();
Node head = new Node();
head = null;
for (int i = 0; i < arr.Length; i++)
{
head = bst.InsertNode(head, arr[i]);
}
TreeTraversals traverse = new TreeTraversals();
traverse.levelOrder(head);
Console.WriteLine();
}
