Some class, somewhere, has obviously been given the recursive money changing problem as a piece of work, because I have had several hundred visits in the last week from people seeking to get a grip on it.
- Read Structure and Interpretation of Computer Programs for Free on the iPad (accidentaltechnologist.com)
- Understanding recursion (antoarts.com)
- Modified “sicp/Introduction.page” (gwern.net)
- Recursion First (blogs.msdn.com)