Applied on the company website and was contacted three weeks later for a phone interview. Four weeks after the interview was scheduled, it actually took place three weeks later.

They ended up calling 40 minutes late, and the interviewer was very incompetent at even asking the questions. I found it very unprofessional and chose not to move on in the interviewing process after speaking with friends who told me this was not uncharacteristic of them.

Several basic binary tree questions that built off of each other in difficulty.

From implementation to finding the depth to checking if the tree is symmetrical.