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 comment is hidden because it contains spoiler information about the solution
This comment is hidden because it contains spoiler information about the solution
Please use a spoiler flag when you post code. I put the flag for you this time.
Your code fails when array is
null. So you must find a way to check this case and handle it in the proper way.You're removing all of them.