sub match_arrays2{ # gmax
    my ($elem, $find) = @_;
    my @regex_find = map {qr /#$_#/} @$find;
    my @match =  ();
    my $elem_join = '#' .join('#',@$elem) . "#";
    for (@regex_find) {
        push @match, undef if  $elem_join =~ /$_/  ;
    }
    return @match == @$find;
}
__END__
Benchmark: timing 500 iterations of hash, join, join2, set...
      hash: 15 wallclock secs (14.66 usr +  0.06 sys = 14.72 CPU) 
      join:  1 wallclock secs ( 1.27 usr +  0.00 sys =  1.27 CPU) 
     join2:  2 wallclock secs ( 1.27 usr +  0.00 sys =  1.27 CPU) 
       set: 10 wallclock secs ( 9.89 usr +  0.04 sys =  9.93 CPU) 
        Rate  hash   set  join join2
hash  34.0/s    --  -33%  -91%  -91%
set   50.4/s   48%    --  -87%  -87%
join   394/s 1059%  682%    --    0%
join2  394/s 1059%  682%    0%    --