Regular Expression / Input String Is Valid Based On The Given Regular Expression?

Sep 20, 2010

i have to check if an input string is valid based on the given regular expression.. this is the regular expression.

(a(bb+aaa+((ab)*bb+(aba)*aa)(a+b)*) + (b(aa+bbb+((ba)*aa+(bab)*bb)(a+b)*)

+ is an OR

* is a LOOP, it is optional, it may be done as many as a user wants.

i've tried many ways to solve the problem that my professor gave me but my knowledge isn't that enough to solve this problem..

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