Unit 6. Trees

A tree is a data structure that is a collection of nodes organized like an upside tree. (See the nearby figure.) We will start with a basic tree and then move on to binary search trees.

Here's a good link for a discussion of how trees are used:

http://stackoverflow.com/questions/2130416/what-are-the-applications-of-binary-trees

Most of our programming assignments will be in Practice-It though we will also implement a simple binary search tree in repl.it near the end of the unit.