Q.No.4. Consider the following alphabet with equivalent code numbe a) Design a binary search tree of your Full Name by taking its equivalent digit and provide a post order traversal of it. The code for blank space is 0. B D E F G H 1 J K L M 2 3 4 5 6 7 8 9 10 11 12 13 N 14 0 15 P 16 Q17 R 18 S 19 T 20 U 21 V 22 W 23 X 24 Y 25 Z 26 b) Write algorithms for the following functions (in | binary search tree) I. that counts the number of nodes in a binary search tre that sums up all the keys in a binary search tree