use strict ; use warnings ; use Data::Dumper ; open my $dataIn1, "<", "Attributes_ID.txt" or die "NO ID FILE: $!"; open my $dataIn2, "<", "Attributes.txt" or die "NO ATTR FILE: $!"; my $data = () ; my $attrs = () ; sub getdata { my ( $fileName, $type ) = split /\t/, $_[1] ; push @{$data}, $type unless !defined $fileName ; } sub getattrs { my @attrs = split /\t/, $_[1] ; #shift @attrs ; push @{$attrs}, \@attrs unless !defined $attrs[0] ; } while( <$dataIn1> ) { chomp ; getdata( 0, $_ ) ; } while( <$dataIn2> ) { chomp ; getattrs( 0, $_ ) ; } my @result; for( my $j = 0 ; $j < @{$attrs} ; ++$j ) { my %subres ; @subres{@{$data}} = ( 0 ) x @{$attrs->[0]} ; $subres{ID} = $attrs->[0] ; for( my $i = 1 ; $i < @{$attrs->[$j]} ; ++$i ) { if ( $attrs->[$j][$i] == 1 ) { ++$subres{ $data->[$i-1]} ; } } ; push @result, \%subres ; } print Dumper(\@result) ;