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.
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I think that there is an error, it only accepted my solution when I reversed my array: when I put "76543210".split("") instead "01234567".split("")
I have mechanized the "Ctrl+S" for save my work... but, here, that shortcuts have a new meaning: to submit and execute. Where can I see all the shortcuts for no do more mistakes?