There are plenty of random coding challenges and prep questions out there, but wouldn't it be cool to have a list of things that were asked at real developer interviews?
There are lots of ways to contribute. Leave a comment here and I'll add it to the repo, create a pull request, DM me...Whatever is easiest for you!
You may also add contextual information such as: how much time you were given to solve the problem, whether or not you were allowed to use additional resources to solve the problem (i.e. Google), the job title, etc.