几乎包括二叉树的所有编程算法，其中有二叉树的先中后序递归与非递归遍历算法，由先序与后序建立二叉树，层次遍历，求叶子结点数，总结点数，树的深度与宽度。-including binary tree almost all programming algorithm, these binary tree after the first sequence which recursive and non- recursive traversal algorithm, and by the first seq