What you called "CABABILITIES", I called "roles" for short.
That which has "CABABILITIES", I called "actor".
Instead of building a hash of roles by actor, build a hash of actors by role. That way, your data structure will ressemble your output. (Update: Oops, that is what you are doing. The rest of the post applies, though.)
In the code below, I replaced doing the same thing to three different arrays with a single loop.
use strict;
use warnings;
my @arrays = (
[ qw( A 1 2 3 4 5 ) ],
[ qw( B 1 2 5 6 ) ],
[ qw( C 2 3 ) ],
);
my %actors_by_role;
foreach my $array (@arrays) {
my ($actor, @roles) = @$array;
foreach my $role (@roles) {
push @{$actors_by_role{$role}}, $actor;
}
}
my @roles = sort keys %actors_by_role;
foreach my $role (@roles) {
print(join("\t", $role => sort @{$actors_by_role{$role}}), "\n");
}
Output:
1 A B
2 A B C
3 A C
4 A
5 A B
6 B
From there, it's not hard to get the second output.
use strict;
use warnings;
my @arrays = (
[ qw( A 1 2 3 4 5 ) ],
[ qw( B 1 2 5 6 ) ],
[ qw( C 2 3 ) ],
);
my %actors;
my %actors_by_role;
foreach my $array (@arrays) {
my @roles = @$array;
my $actor = shift(@roles);
$actors{$actor} = 1;
foreach my $role (@roles) {
$actors_by_role{$role}{$actor} = 1;
}
}
my @roles = sort keys %actors_by_role;
my @actors = sort keys %actors;
{
foreach my $actor (@actors) {
print("\t", $actor);
}
print("\n");
}
foreach my $role (@roles) {
print($role);
foreach my $actor (@actors) {
print("\t", $actors_by_role{$role}{$actor} ? 'X' : ' ');
}
print("\n");
}
Output:
A B C
1 X X
2 X X X
3 X X
4 X
5 X X
6 X
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