The interview process consisted of:

• 1 phone interview
• 2 technical interviews
• 1 behavioral interview

I did not make it past the second technical interview. The phone interview went fine, and the first set of technical interviewers (there were two) were very nice. The next set of interviewers were not very kind. They did not understand my approach to the second problem, and I was not called back.

Create a data structure for a subway system tracking system.

This structure should be able to track:

• Stations
• Lines connecting stations
• Trains running on those lines
• Train positions on lines
• Train capacities
• Passenger counts on trains