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.
Been a very long time since I touched this, but it's string comparison to see if one string can be transformed into a second string only by adding, removing or swapping a single character.
With that said, we were apparently code golfing and optimizing performance just for fun, you should absolutely not take this code as a good example of well-written Ruby.