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.
Your solution looks very neat and easy to read.
Your solution is nice too. Makes the map method look uneccessary.
Use spoiler tag when posting code/solutions to katas - since your posts are visible on main Codewars page in Discourse anyone can see them. I've flagged your comment this time.