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.
I can't understand why people consider this like a best solution.
String is handled twice (!!)
This comment is hidden because it contains spoiler information about the solution
Is it correct to do things in one line? I mean, not this case, but what if I would like to see what the count of 'x' returnded? Like debugging the problem?