A take-home interview question. This might be great for some, but I really did not like it and did not perform well. I was sent a pdf and given two hours to code. There just didn't seem to be enough time to really nail it down. I would feel comfortable saying the prompt was vague and the process was not really fleshed out. I had to annotate a grid and then look at examples of tests they gave (in doc format -- not yaml, json etc -- mind you) to understand what it was even asking. When you interview I'd suggest showing your coding skills in terms of project-structure and coding-style -- don't even worry about getting the problem right because it probably doesn't matter.
