Would you be a surgeon, you could reconcile your hobby and job – lay out according to this code visceral organs of a patient. The Θ reminds me a kidney.

I am no developer, no IT-spezialist.
In real life I am only a doctor...
JS war my fan, relax, kind of art:)

6 KYU at least. Hard for seveners.

The cleverest for me, because it is the only solution which logic I got of from the first glimpse.

Thanks, but I do not see the logic behind it.

The same. And I'd also like to know if it's universal with other arithmetic progressions.

Yes! It took me about 3 hours of observation to see the pattern.
P.S. Hint, maybe. Not a spoiler.

I am not splitting hairs, but isn't it regarded as bad practice to omit curly brackets around statements? I vaguely remember having read about it somewhere at MDN though.

yes

Developers with that style of coding get more salary, isn't it?