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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.
Don't this blows up if the first character of the string is not ascii (multi-byte character)?
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This does two iterations where the solution can be found with only one.
But I think complexity is n^2...
Clever but you pay
n*log(n)for the sort.