Given an array (56, 72, 15, 99, 34, 28, 3, 15, 66, 81, 19, 21), it is used in Q123. 1. Insert the array into a binary search tree. Draw the tree please. 2. Given a new item 33, write the path it will go through in order to insert it into the binary tree created in Question 1. 3. Given the hash function hash(x)=2x+1, build two hash tables when hashcode array length is 5 and 6