[regex-coach] Greetings and a puzzle

[Allen, Greg]

I think the problem is poorly specified: what does "two words" really
mean? Essentially which of these are two words?

abc1def2
ab_def12
_abcd12_
twowords12

All match against Edi's rather neat regex, but are they valid?

Is "_" part of a word or a word separator?

:)

-----Original Message-----
From: regex-coach-bounces at common-lisp.net
[mailto:regex-coach-bounces at common-lisp.net] On Behalf Of Edi Weitz
Sent: Tuesday, September 27, 2005 2:13 PM
To: Frank
Cc: regex-coach at common-lisp.net
Subject: Re: [regex-coach] Greetings and a puzzle


Hi!

On Tue, 27 Sep 2005 08:27:26 -0400, Frank <lists at frankmarion.com> wrote:

> Hi, I'm new to the list. I was looking for a nice regex list, and
> found this one.

This is not a general regex list, it is specifically for the "Regex
Coach" application.

> A programmer wants to test a password, and he wants to do it in ONE
> expression. Here are the criteria for a well formed password
>
> 1) Minumum of eight characters in length
> 2) Two words [a-z_] are required
> 3) Two digits [0-9] are required.

(?=.*[a-z_].*[a-z_])(?=.*[0-9].*[0-9]).{8,}

Cheers,
Edi.
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