tank you so mach

very elegant

I also found this formula ( r = (r - n - 1) / 2 ) looping until less than n
where n = number of names
...only I found that I didn't need to drop the fraction each iteration, I
could just do it at the end.

very clever use of (,\b)?

really clean and clear format!

Good Kata, but the description should have info that "Random tests" have another name array of different length.

Thanks! Much appreciated.