Finding the complement of a regular expression

Posted by Bo Tian on Stack Overflow See other posts from Stack Overflow or by Bo Tian
Published on 2010-05-28T23:19:22Z Indexed on 2010/05/28 23:22 UTC
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There's a question on my exercise sheet to find the complement of r = (a|b)*ab(a|b)*

I've come up with a solution, but I'm not sure if it's correct. Please help me to check, and correct my errors.

Thanks in advance.

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Finding the complement of a regular expression - Developer IT

Finding the complement of a regular expression

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c# RegEx with "|"

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