C++的数据结构的2道题目 求解 急!!!!!!!!!!!!!!!!!!!!!!!!!!

(a) what is the resulting AVL tree
(b) what is thee resulting 2-3 tree
(c) what is the resulting 2-3-4 tree
(d) Delete 15 from the AVL tree
(e) Delete 30 from 2-3 tree
compare two implementationof graph :adjacent matrix and ajacent list.