Terrible.

An interviewer had a thick accent, and half my time was spent asking the interviewer to repeat themselves rather than focusing on the algorithm at hand. It's hard to consider Two Sigma an elite company when your first contact with the company is a subpar interviewing experience. The interview also started 5 minutes late.

I don't want the hiring bar to be lowered; I just want a noise-free avenue for choosing the right candidates, and this definitely wasn't that.

Create a filtering iterator for numbers mod 5 based on an existing iterator.