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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.
Thanks for comment! You're right, that solution destroys the order of array1 and it doesn't guard against duplicates in array1 as it should according to requirements.
:) nice
Does this destroy the original order of the passed vector (array1)?
Otherwise it's nice to note that copying woulf preserve.
I didn't guess to use copy_if and any_of. Thanks.
What if array1 has duplicates?
This comment is hidden because it contains spoiler information about the solution
This comment is hidden because it contains spoiler information about the solution