Generate unique random alphanumeric characters that are 7 characters long

Posted by Prasanth on Stack Overflow See other posts from Stack Overflow or by Prasanth
Published on 2010-05-09T22:57:41Z Indexed on 2010/05/09 22:58 UTC
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It need not be meaningful words - more like random password generation, but the catch is - they should be unique. I will be using this for some kind of package / product code. Which is the best method available? :)

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