Apple AI/ML Engineer interview questions

It was a coding interview asking me 2 questions. The interviewer were just looking at me without providing any feedback on my thoughts and os. I found one of the question as leetcode hard while the follow-up question made it much harder. The second question was so hard and I couldn't find it in Leetcode.

Interview with the hiring manager on day 1, followed by a technical interview with a member of the team the next day, and then thee offer on the third day. The interview to offer process took 3 days.