How to find all characters in a string whose appearance is greater than 2

Posted by Summer_More_More_Tea on Stack Overflow See other posts from Stack Overflow or by Summer_More_More_Tea
Published on 2010-04-19T14:25:44Z Indexed on 2010/04/19 14:33 UTC
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Hi folks:

I have a question about algorithm:

How to find all characters in a string whose appearance is greater than a specific number, say 2 for example efficiently?

Regards.

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