Practice 11/13/2017  (2, 4) tree

1. Insert to an initially empty (2, 4) tree these values in order given:
10, 20, 30, 1, 2, 14, 16, 22, 28, 29, 5, 7


2. Starting with the tree given from the final answer to #1, delete these
values in order given:
16, 20, 30, 5, 1