Regarding 2, I would simply solve it, and then maybe ask about using the same number twice to fine-tune the solution. In real-world problems I almost always th

Regarding 2, I would simply solve it, and then maybe ask about using the same number twice to fine-tune the solution. In real-world problems I almost always think of corner-cases. So I think that the interview process is flawed - at least in my case - by assuming that not asking about specifics generalizes. In general, if the interview process is designed in a way that reading a random article like this on HN helps you pass it, I'm kind of skeptical how well it's measuring future job performance.