Simple coding interview over the phone.

A very friendly interviewer asked straightforward questions. They weren't meant to trip you up or be extremely high complexity; they just wanted to make sure you knew what you were talking about.

I was given plenty of time to answer. The nicest thing was it wasn't just a series of questions fired at me. We discussed different programming concepts, and the interviewer allowed me to elaborate on my answers.

It was a perfect mix between casual and professional.

How would you find the second largest number in an array of size n?

Broken into multiple segments, he asked how a HashMap is built and how I would implement it.

He asked about parallel computing in general and some specifics.