摘要：
二叉树结构struct BTnode{ char m_val; BTnode *m_pl,*m_pr;};class BT{ BTnode *m_proot; void create(BTnode *father,int k); void pre_travel_helper(BTnode *father); void post_travel_helper(BTnode *father); void mid_travel_helper(BTnode *father); void clear_BT_helper(BTnode *father);pub... 阅读全文
