Apple Software Developer interview questions

The process was long- a phone interview and then 3 double interviews, meaning each interview was infront of 2 people, and then half the time one of them is the interviewer and then they switch, each of them asks about a different subject, effectively you have like 6 interviews, not including the phone interview. All of these are technical interviews.

First brief introduction, then asked some technical questions, which are quite strange and difficult, lastly did an easy leetcode question. The interviewer seemed to not pay attention to the interview and I felt disrespected.