Question

I want regular expression for a string of length 9 and with format of

AAANNNNNA

A- Alphabetic, N-Numeric

And also for AAANNNNNN

Please help me.

Thanks

Answer 1

First one: [a-zA-Z]{3}[0-9]{5}[a-zA-Z]

Second one: [a-zA-Z]{3}[0-9]{6}

Combined: [a-zA-Z]{3}[0-9]{5}[a-zA-Z0-9]

You can simplify this by using \d to represent digits: [a-zA-Z]{3}[\d]{5}[a-zA-Z\d]

How it works:

[] is a character class. a-z means the range a to z, A-Z is the same for caps, 0-9 is 0 to 9. The use of {} afterwards means repeat, so {3} means repeat the previous pattern 3 times.

Regex isn’t that hard to learn, go read up on it at http://www.regular-expressions.info/