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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

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