Beefy Boxes and Bandwidth Generously Provided by pair Networks
Just another Perl shrine
 
PerlMonks  

Re: Perl Pattern Matching & RegEx's

by Dallaylaen (Monk)
on Mar 07, 2013 at 14:16 UTC ( #1022237=note: print w/ replies, xml ) Need Help??


in reply to Perl Pattern Matching & RegEx's

Why not split the string into chunks delimited by AAA, and then combine the chunks as you want and join them back?As in:

#!/usr/bin/perl -w use strict; my $string = shift || 'AAABCDAAADCBAAABBDAAA'; my @between = split /AAA/, $string, -1; pop @between; shift @between; for (my $i = 0; $i<@between; $i++) { for (my $j = $i; $j<@between; $j++) { print join "AAA", "", @between[ $i .. $j ], "\n" }; };

This won't solve the problem if your string contains AAAA, though.

UPDATE: This substr-based solution is much better, it doesn't suffer from AAAA problem and probably uses less memory, too.


Comment on Re: Perl Pattern Matching & RegEx's
Download Code
Replies are listed 'Best First'.
Re^2: Perl Pattern Matching & RegEx's
by jaiieq (Novice) on Mar 07, 2013 at 14:23 UTC
    This looks to be exactly what I was looking for. I am going to try it on a few other test cases and see how it works. Thank you!

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://1022237]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others musing on the Monastery: (16)
As of 2015-07-29 16:15 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    The top three priorities of my open tasks are (in descending order of likelihood to be worked on) ...









    Results (265 votes), past polls