The "Elevator Problem" (and the "Street Light Problem") were both CS 200 exercises when I was in college. Along with a bunch of other 'game' type systems like 8 queens, Hanoi towers, maze solving, etc. Still, that is the most elegant web widget I've ever seen that illustrates the options. If you're reading this John I'd love to hear how you wrote them.
ChuckMcM · · focus · HN ↗