"Nobody said this was the moral thing to do. It's just an exercise, get over yourself."

Software has so much potential to change the world for the better, yet I see so many developers doing things that I would consider ethically questionable. (Or, like the two devs who deigned to comment on my post, doing nothing at all, according to their GitHub pages.)

I think it's important to remind myself that I have a choice in what problems I solve. I'm not saying y'all can't do this exercise if you want to. All I said was that I'm skipping it because I'd never want to expend energy helping a creepy dude sabotage a relationship that he's probably jealous of his friend for having. And if I happen to remind other people that they have a choice in what they work on, cool, but at no point have I tried to tell anyone else what to do, nor will I.

And that's how I learned about Matrix. Thanks!

Being abusive to a friend who is happy in a relationship isn't a problem I want to solve. This is a creepy premise, and I'm skipping it.

That's a clever use of the #sort_by method.

This may be a one-line solution, but there's too much going on in this one line. I'd recommend breaking it out for readability.

I did something similar, but did .map(&:to_i) for shorthand.

I like that you extracted the duplicate code into its own method. It's a very clear method name as well, so kudos.