http://www.perlmonks.org?node_id=633177

cengineer has asked for the wisdom of the Perl Monks concerning the following question:

I'm looking to find a particular number in an array twice in a row. More specifically, I'm looking to match 81 or 82. Is there a better or more elegant approach than something like:
my @data = qw ( 01 b2 01 00 b6 81 81 01 b4 0a 01 01 01 01 00 01 00 00 +01 00 c7 82 82 01 b2 01 00 b8 ); for ( my $i = 0; $i < $#data; $i++ ) { if ( $data[$i] eq "81" ) { if ( $data[$i+1] eq "81" ) { print "match 81 starting at index $i\n"; } } elsif ( $data[$i] eq "82" ) { if ( $data[$i+1] eq "82" ) { print "match 82 starting at index $i\n"; } } }
Thanks in advance!