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.
Really nice!
Print the input yourself: https://docs.codewars.com/training/troubleshooting/#print-input and debug your code.
even passing all the random tests, it says it faild 3 tests, but don't really explain why or show the tests that gone wrong