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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.
can someone explain why return has to be stated twice
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I'm still green for this
牛逼，学习
nice
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Could've compile regex first
Very readable. It could be condensed a bit but it is very easy to understand and well written. Great work!
for me : the best solution
Hmmm
Great solution
I'm sorry if I don't understand something, but this solution can pass test with empty array, isn't it?
Smart!
What is the year of that solution?
good work!
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