Good process, interviewer helps you work out the problem as you are completing it. It is advantageous to the candidate to think out loud and solve the problem so the interviewer can give his input along the way. Very friendly recruiter, willing to work with the interviewee to help answer the questions

Described a catalogue of tiles of different shapes (L shaped, reverse L shaped, square shaped, etc.) comprised of individual smaller square tiles.

Programming related questions on how you would declare these tiles (as an object or data variable, etc.) and different functions associated with the tiles like removing redundant shapes, converting shapes, etc.