Resolve "Hash functions and experimental runtime evaluation"

Closes #105 (closed)

@yangelova You're next in my list, would you like to review this one? 🙂

@MrHug would also you like to review this one from a teacher's perspective? You have quite some experience in creating these kinds of exercises for the Algorithm Design course. And since this is the first experiment-kind of exercise for this course, having two approvals would be nice IMO 🙂

Just a heads-up: I've used the generator for this analysis exercise, so I moved the output/ folder one level up because of that!