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Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
Minor issue indeed but I added the import
It should be specified that the random tests may include non-letter, non-space characters.
Good Kata. Feels like 7 kyu, though, not 6.
Minor issue, but it appears that you need to add
import java.math.BigInteger;
at the top of the solution to make it work, unless of course you intended for us to figure this out ourselves for some reason.
Ah, I did this too, but mine was so much more messy. I didn't shorten the given variable name "numbers" to just "n"! Nice catch there.
I as well. I was using Get methods, but wasn't sure if it was what the Kata was asking.