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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.
Im just not big on reinventing the wheel, but you're right there is nothing wrong with the Kata.
Ok fair enough. And yeah i shouldn't have marked it as an issue. Sorry about that.
The use of Strings throughout the program rather than IntStreams prevents the use of the "flatMap" function in the IntStream class (because mapFunction must return an IntStream, not a String). This means the programmer must essentially write their own "flatMap" function to use Strings which is unnecessary. Also, converting from an IntStream back to a String is a pain and it unneccesary in the case of the creation of the dragon curve. Just use IntStreams instead of Strings and this Kata is pretty good.