Question $4$: AVL Tree $(30$ pts$.)$

AVL Tree $($Do all the Rotation necessary to make it AVL after all the operation$)$

a$.$ Create a AVL tree from the following dataset:

$7,4,9,8,10,5,2,3,1,15,13$

b$.$ Add $14$ to the tree.

c$.$ Delete $5$ and draw the final AVL tree.