Possibly (sorry, not one liner)-
use YAML;
my ( @one, @two );
my %one_two = map {; $_ => int(rand(2) } 1 .. 10;
for my $key ( keys %one_two )
{
push @one, $key;
push @two, $one_two{$key} || undef; # "skips" 0s here.
}
print Dump ( \%one_two, \@one, \@two );
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