1 hour interview, a few short answer questions and one coding question. The short answer questions were "what is a dictionary", and "what is the difference between an abstract class and an interface?" These were straight forward to answer. The coding question came in 3 parts, the first and second involving simple iterative functions, but the third was to implement it recursively. The third was easy if you were to implement it from scratch, but not easy when they instructed to change the function by adding a few lines.