Toggle navigation Code Fellows Foundations Bootcamps Dev Accelerators Ruby on Rails iOS Development Full-Stack JavaScript Front-End UX Python Calendar Apply Now by Dr. Ben Keller I have seen students hone their skills by borrowing copies of the developer interview books in the Code Fellows "library." What's interesting about these books is that they lump questions about graphs and trees into the same chapter. Technically, trees are graphs. But if you want to show you know what you are talking about during an interview, you need to know when being a graph is important, and when it's not. (And, maybe, just maybe, you might actually find some of this stuff useful in your career.) Graphs come out of mathematics and are used to describe or model problems. For example, if we wanted to model finding a route for walking from Code Fellows to the ...