Regular Expression :match string containing only non repeating words

Posted by nash on Stack Overflow See other posts from Stack Overflow or by nash
Published on 2010-05-21T02:59:47Z Indexed on 2010/05/21 3:20 UTC
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java

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regex

I have this situation(Java code): 1) a string such as : "A wild adventure" should match. 2) a string with adjacent repeated words: "A wild wild adventure" shouldn't match.

With this regular expression: .* \b(\w+)\b\s*\1\b.* i can match strings containing adjacent repeated words.

How to reverse the situation i.e how to match strings which do not contain adjacent repeat words

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