Why not use recursion?

If you program recursively, the intermediate fractions need to be stored in memory. But this probably only takes up a little more space on the stack until the function finally returns, so even with millions of calls it doesn't really matter.

One liner for recursive method.

r,g,b variables are additional variables because you can send variables directly like VeronicaBionicle and i think VeronicaBionicle has beter practice than you

i know it but between this two cases i want to understand which one is better. both functions work under 1ms but when we use thousands or milions of times in another programm it would be different.

I guess it's neglectable, the amount of recursions cannot be very high in any case.