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.
Must only mutate the given array.
Will do.
Please use spoiler flag next time.
This comment is hidden because it contains spoiler information about the solution
AFAIK, applying a regular expressions to a string is linear as long as it doesnt't include lookarounds.
This comment is hidden because it contains spoiler information about the solution