public static void TestRedBlackTree()
{
RedBlackTree <int, int> redBlackTree = new RedBlackTree <int, int>();
redBlackTree.AddByRecursion(10, 10);
redBlackTree.AddByRecursion(9, 9);
redBlackTree.AddByRecursion(8, 8);
redBlackTree.AddByRecursion(7, 7);
redBlackTree.AddByRecursion(6, 6);
redBlackTree.AddByRecursion(5, 5);
redBlackTree.AddByRecursion(4, 4);
redBlackTree.AddByRecursion(3, 3);
redBlackTree.AddByRecursion(2, 2);
redBlackTree.AddByRecursion(1, 1);
}