for swift it is harder than 5

wow bit shifting so clever

me too, i had the same idea, but it still timed out

Mathematically, it the same, but sometimes, we lose sense with over-refactoring.

how did you derive this solution?

Good Kata :D and way harder than some 3kyu tasks
... or I really suck at bfs

thanks, it is approved

Here's a fork that fixes it

When I first saw this, I was like what??!! :D

AMAZIIIIIINGGGGG

thanks!

one of the few solutions that optimize performance by stopping as soon as the element is found

Added the hint about the origin. Thanks for the suggestion!