Okay so there are two things going on here a warning and a Fatal error.
I will sort out the warning; it's not a big deal hopefully.
Your problem (and the reason the runner crashed) is the Fatal error. It occured because (I think) your lists were too large. This kata uses numbers around 100 billion so lists are out the questions.
To fix you will need to make a new solution that doesn't make use of lists or loops.
let me know if you still are unclear.
.
A workaround is to use
String?in the function signature.I close since this has already been raise as an issue below.
Okay so there are two things going on here a warning and a Fatal error.
I will sort out the warning; it's not a big deal hopefully.
Your problem (and the reason the runner crashed) is the Fatal error. It occured because (I think) your lists were too large. This kata uses numbers around 100 billion so lists are out the questions.
To fix you will need to make a new solution that doesn't make use of lists or loops.
let me know if you still are unclear.