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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.
"You can use if..else or ternary operator to complete it."
Ok.
you made me chuckle XD
They told you in description to don't use a fucking if...else point is using ternary