Match string of odd length

tags:

regex

views:

answers:

+2 Q:

Match string of odd length

Im trying to construct a regular expression to just match if the length of the string is odd. I have not had any success so far.

2313432 - true

12 - false

121111111111111 - true

Thanks

+4 A:

How about something like: ^(..)*.$ ?

Jerry Coffin 2010-08-01 23:59:57

@Dacto: I was going to say the same thing, but he had made an edit to his answer. Refresh and you'll see that this is now correct EXCEPT that it will not match strings of length 1. (I have no idea why people are upvoting it, now or before the edit!)

Platinum Azure 2010-08-02 00:04:34

`'^((..)+.|.)$'` adds a match for a length 1 string (I'd still use `strlen()` though)

Seth 2010-08-02 00:06:06

@Seth: That regex is more complicated than it needs to be. (See my answer)

Platinum Azure 2010-08-02 00:06:56

There we go. (-1 removed)

Platinum Azure 2010-08-02 00:10:04

@Platinum - yes, it is.

Seth 2010-08-02 00:19:48

+6 A:

You want this regular expression:

^.(..)*$

This says, match one character, then zero or more sets of two characters, all of which is anchored to the start and end of the string.

Platinum Azure 2010-08-02 00:02:53

ansaurus

tags:

views:

answers:

Match string of odd length

related questions