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regexkleene-star

How to evaluate this regular expression?

I'm just learning regular expressions, so I just want to make sure my understanding is correct.

01* mean 0 followed by 0 or more repetitions of 1.
1* + 01* means either 0 or more repetitions of 1 OR 0 followed by 0 or more repetitions of 1.

Am I right or is there something that I'm missing? Thanks.

Solution

  • This seems correct to me. (Even thought I'm not a whiz in regular expressiony myself)

    But here's a good tutorial you could check out. This one I found useful as well.