I looked it up (on Google of course) and it seems like this is one of Google’s recruitment channels.
You get access to a terminal and a text editor:
Here are the commands you can execute:
You have a week to complete each challenge. I’ve done 2 of them so far, and requested the third one - they have been very enjoyable and I’ve already learnt a lot from them.
I’m pretty sure I have literally zero chance of being hired by Google (and I’m not even sure I would want to work for them even if they made the mistake of wanting to hire me), but this has been super interesting so far. And yeah, also a huge time waster, I’ve been thinking about making the solution to the third challenge more elegant and performant all day instead of doing my actual job.
Oh yeah. This is quite fun, though once you hit level 4/5 some problems require fairly advanced algorithms / mathematics. One of the problems I gave up on solving on my own required knowledge of Polyas enumeration theorem to solve. Fortunately or unfortunately you can find some answers online, otherwise I would’ve never even known such a theorem existed.
For the tougher problems, expect a lot of graph theory / combinatorics, which I guess is the nature of Googles challenges as a search engine.