综合2叉树及B+树优点的能根据增删改而分裂或合并的完整程序(现在以8bit(BYTE key)为关键字,可扩充到64bit的double为key,用户数据包现在以float ton表示,可扩充到任意结构struct)-Integrated 2-tree and B tree based on the merits of additions and deletions instead of splitting or merging of the integrity of the procedu