Apple Software Developer interview questions

The process started with a recruiter call, then I had a technical screening, and lastly a three-part panel interview with an engineer on the team, hiring manager, and someone on the early careers program

Bluetooth connectivity team - interviewers were nice as they are always asked to. A few minutes about the team, the position and a little about my self. Was asked to describe a project I worked on, and what was my part in it. Then 2 technical questions, one stated below, the 2nd is very custom to them, but not that hard.