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.
There are a lot of solutions seeming not to fit the description perfectly.
This comment is hidden because it contains spoiler information about the solution
"If the final result is longer than 140 chars it must return false."
There's no test for input larger than 140 chars and final result shorter. Example: "hello world " + " "*140 (hello world with a bunch of trailing whitespaces)
I'm sure it would break a lot of solutions out there.