Airbnb Software Engineer Internship interview questions

After I applied, I got a response back within a week or so asking to schedule a hackerrank coding challenge. This went quite well, as the recruiter(s) quickly followed up by scheduling two technical 45 minute Skype interviews. After this part, there was an additional 45 minute technical Skype interview. This particular interview was quite hard due to the nature of the question, and I ended up doing not too well. This was followed up by a 30 minute behavioral interview with a lot of culture fit questions. Overall, all of the interviewers were great and the HR was very prompt in responding to emails and scheduling interviews.