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.
When you remove element from the beginning (or from the middle) every element on the right is shifted to the left by one.
Then you continue your loop but all the indexes on the right are messed up.
Try starting from the right side.