Loading collection data...
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.
This kata has no clear discription and exmaples!!!
I used for.loop and I still have this problem!!!
What are these another approach?
Do you pass the challenge?
How did you deal with bug arrays?
Do you pass the challenge?
How did you deal with bug arrays?
so I must return "null" if there is not a single digit integer???