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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.
and how did you solve this problem? the same bullshit
In Java, the big random tests exceed the maximum value of long data type.
If you use BigInteger to prevent this, you should get an error, because the return data type should be a long[].