Not really happy with the process. Even after writing complete, working code, I got a rejection because of the way the output was displayed. Instead of System.out.println(x + "," + y);, I was displaying System.out.println(y + "," + x);. Also, I felt the interviewer was very inexperienced and cold.

Very, very high bar for bug-free coding. I haven't seen it anywhere else so far in my career. Be ready to write complete, bug-free, working code without wasting too much time in thinking.

Overall, I felt the interview process was not well-refined. Airbnb definitely needs improvement in this area; have folks well-trained in conducting interviews. Interviewers need to be told to be more cooperative in making candidates successful, and rejecting on just one or two bugs might not be a good idea.

Palindrome pairs