If Rust is okay with it, the math must be correct. Perhaps we've entered another dimension?

wat.

Very efficient!

Best performance

added here

ok. now, time for the 25 randomized tests! :D

case 1: return "1!/0!";

But this solution does not account for negative values... 🤔

Length of sequence times average of sequence equals sum of sequence.

"? true : false" is unnecessary

whaaaaaaaaaaaaat?

There is only 1 random test, which is still not enough

How does one come up with this?

Excuse me, could you explain the same stuff you wrote, but for dummies who are not into math?

smart proposal, nice job!