I am not able to do looping with two arrays simultaneously

I need to match the each elements from the below array

This should be done without using any modules

Eg: Array 1: A T C G T C G A G C G

Array 2: A C G T C C T G T C G

my ($array1ref, $array2ref) = @_;

my @array1 = @$array1ref;
my @array2= @$array2ref;
my $count = 0; 
foreach my $element (@array1) {
 foreach my $element2 (@array2) {
 if ($element eq $element2) {
 $count++;
  }else { ???????????


}

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Thank you

In reply to Array looping by Nansh

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