From: Joel VanderWerf <vjoel@...>
Date: 2006-08-25T09:12:55+09:00
Subject: Re: Determinig if 3 characters in a row are the same?

Ben Johnson wrote:
> Sorry for the noob question, but is there a fast and efficient way to 
> determine if there are 3 of the same charater in a row in a string? I'm 
> sure this could be done in regex but I am not a black belt in regex.
> 
> thanks for your help.
> 

irb(main):001:0> s1 = "1234aaa567"
=> "1234aaa567"
irb(main):002:0> s2 = "1234abc567"
=> "1234abc567"
irb(main):003:0> s1 =~ /(.)\1\1/
=> 4
irb(main):004:0> s2 =~ /(.)\1\1/
=> nil
irb(main):005:0>

-- 
       vjoel : Joel VanderWerf : path berkeley edu : 510 665 3407