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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
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I like your GroupWhile method that makes the important part of the solution really readable. Good job!
Thank you for your feedback, a good suggestion indeed. I implemented some tests for that and republished the kata. The new tests verifies that a random string can be compressed and then decompressed to the original string.
This was a nice and easy kata for begeinners, also I love you kata description. Keep up the good work!