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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.
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champian man
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nice one
Nice. But what about last instruction?
XO("zpzpzpp") => true // when no 'x' and 'o' is present should return true
May be a ternary operator will fix this.
very smart
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Very nice and clear solution