A friend who had just completed an internship referred me, and I was asked to send my CV to a recruiter.

From there, I was asked for a 45-minute phone interview with a recruiter who was taking notes. This mostly involved behavioral-style questions and being asked to outline how I would test four different functions of a pen.

After passing this interview, two and a half weeks later, I was invited to the Sydney office for an in-person interview. This consisted of four, hour-long interviews, all technical with very little focus on me as a person. Results were given immediately after the interviews.

Determine if an array from 1 to n has a duplicate in constant time and space.