Try using grep. 
my @a1 = qw( A B );
my @a2 = qw( A B C D A D B A C );

foreach my $el(@a1){
    my $count = grep /^$el$/, @a2;
    print "$el is in Array2 $count times\n";
}

[download]
produces 
A is in Array2 3 times
B is in Array2 2 times

[download]

In reply to Re: Code requested for array intersection count by tcf22
in thread Code requested for array intersection count by harry34

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