二叉平衡搜索树，实现了插入算法，并且每次插入之后还是二叉平衡搜索树，并且显示平衡因子-Balanced binary search tree insertion algorithm realized, and after insertion or balanced binary search tree every time, and displays the balance factor

二叉平衡树类模板的实现，删除、插入和打印等功能。(Implementation of two fork balanced tree template)