The whole point is probably to weed out people who can't do it or don't understand inheritance. If thats what they are asking for, implement it, programmers an

The whole point is probably to weed out people who can't do it or don't understand inheritance. If thats what they are asking for, implement it, programmers and their ego always trying to "LoL, DuM iNtErViEw QuEsTiOn". There is so much to learn from a person by just seeing how they solve a simple problem like this one.