实现对依次输入的关键字序列建立二叉排序树，并能实现二叉排序树的查找、插入和删除运算。



链式存储结构：

typedef struct BiTNode{

　　KeyType key

　　BiTNode* lchild

　　BiTNode* rchild

}*BiTree

关键字类型KeyType为int。

-Binary sort tree, and the turn sequence of the keywords entered binary sort tree lookup, insertion and deletion operation. Storage Structure: typedef struct BiTNode {KeyType the key　BiTNode* lchild for　BiTNode* rchild }* BiTree　Keyword Type KeyType to int.