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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.
I'm sorry for my bad English, but in order to solve this kata, I needed an additional condition, because the tests did not pass, and everything went without it...
Strange tests, the second time passed without a condition :)
Топчик, уже злой, что аж зубы скрипят, от того, какие тут условия задачи люди строчат, а тут решение до улыбки довело)))