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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.
18446744073709551615 is max value for uint64 and large/huge tests exceed it. please fix this ASAP
you can not compile regexp in function, you shoud remove it outside and do a constant. compiling regexp is expensive
Almost perfect! Just should return Integer.parseInt() to return int instead of Integer :)