二叉树的所有功能基本实现，遍历的多种形式，创建，查找，还有栈的引入，线索化，树的深度以及非递归遍历等等。-The basic realization of all the features of a binary tree traversal various forms, create, find, there are stacks of the introduction of the clues and the depth of the tree, as well as non-recursi