It was one of my more memorable ones. It had ~50 exercises that I recall, and the core of the program was supposed to compute a word frequency list on the words

It was one of my more memorable ones. It had ~50 exercises that I recall, and the core of the program was supposed to compute a word frequency list on the words in the novel (with a blacklist of words like common adjectives etc). The twist was you had to do it with a particular programming paradigm in mind each time - functional, object oriented, MVC, REST API, anything you could think of. It was very eye opening solving the exact same problem in so many different ways.