Please complete these three problems and submit your solutions to:

• Mark Josef (mjosef@academicsoftwareplus.com) if you are applying to Academic Software Plus.
• Mike Margitich (mmargitich@liaison-intl.com) if you are applying to Liaison International.

Each problem consists of a class to implement, and a test suite which must pass. You should only edit the file defining the class.

Tests developed by Jim Lindley (@jlindley on GitHub) and Mark Josef (@mark on GitHub)