I ended up using “Specs”:http://code.google.com/p/specs/ to make sure I passed Dave Thomas’s test criteria. I’m sure my below two solutions (recursive and while loop) are quite clunky compared to someone who’s familiar with Scala, but the goal of this was to get something running and passing. In a week or two I’ll revisit again after learning some more things about Scala and hopefully be able to tidy things up a bit.

Anyways, here’s my code:

Liquid error: No such file or directory - posix_spawnp