First and most importatly, try it.
If I understand your problem well enough ( which I'm not sure of, sorry), try to use hashes instead of arrays. If the imput number doesn't exist in the hash as a key you create it, if it does, you create another hash with the given key. Values are not important.
Tiresome. Maybe an expert has a better solution, but it would be useful to know, what will you use these arrays or hashes for.

I'm too lazy to be proud of being impatient.

In reply to Re: Duplicate Element in an Array by nemesdani
in thread Duplicate Element in an Array by vihnny

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