How about turning the arrays into strings and then using boolean & on them, using tr to count the 1s? 

my @x = qw( 0 0 0 0 1 1 0 0 0 0 1 0 );
my @y = qw( 1 0 0 0 1 0 1 0 1 0 1 0 );

my $x = join '', @x;
my $y = join '', @y;

my $compare = $x & $y;
my $joint = $compare =~ tr/1/1/;
print "$joint\n";

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Can you throw this into your benchmarking? @x obviously would need to be turned into a string only once.

In reply to Re: Comparing two arrays by hdb
in thread Comparing two arrays by baxy77bax

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