I fixed most of your points ✅. I removed the return type completely, because if the return type would be a double[] then stringArray.collect { it as double } would be a valid solution without converting the list back into an array.

Thank you!

Ohh ok, I see what you meant. Approved your fork ✅

Groovy Translation

Replaced test.describe with test.it ✅

Groovy Translation

Implemented your remarks ✅
Even though there is a reference solution now, I decided to keep it in for simplicity's sake

Fixed all of your points and thanks for having a look over my kata ✅

Groovy Translation

Fixed

Fixed

Fixed (almost a month later)

Updated ✅

Applied @Just4FunCoder's and hobsky's changesa

I did use a slightly modified version of your solution before, but now I use yours on the Random Tests.