Beefy Boxes and Bandwidth Generously Provided by pair Networks
The stupid question is the question not asked
 
PerlMonks  

Re^3: string match using with an N in any position

by BrowserUk (Pope)
on Nov 19, 2011 at 08:07 UTC ( #938946=note: print w/ replies, xml ) Need Help??


in reply to Re^2: string match using with an N in any position
in thread string match using with an N in any position

If the possibility your describe can happen, I think this is a computationally simpler solution:

#! perl -slw use strict; my @queries = qw[ GCGAT CACGT ]; chomp( my @targets = <DATA> ); for my $q ( @queries ) { for my $t ( @targets ) { my $matched = ( $q ^ substr( $t, 0, length( $q ) ) ) =~ tr[\0] +[\0]; if( $matched == length( $q ) or $matched == length( $q )-1 and substr( $t, 0, length( $q ) ) =~ tr[N][N] == 1 ) { print "$q matched $t"; } } } __DATA__ GNGATNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN +NNNNNNNNNNNNNNNNNNNNNNNNNNNNNN GCGANBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB +BBBBBBBBBBBBBBBBBBBBBBBBBBBBBB CNCGTNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN +NNNNNNNNNNNNNNNNNNNNNNNNNNNNNN GBGATNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN +NNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.


Comment on Re^3: string match using with an N in any position
Download Code

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://938946]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others imbibing at the Monastery: (7)
As of 2015-07-03 15:53 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 (53 votes), past polls