In cases like this I prefer to first classify each label by setting a flag in which array it is present. I do this by using bits (1 for @input_array, 2 for @input_A, 4 for @input_B). In the second step the labels are processed based on their flags. 

use strict;
use warnings;

my @input_array = qw( N1 N2 N3  N6  N7      );
my @input_A     = qw( N1 N3 N11 N11 N10 N16 );
my @input_B     = qw( N3 N6 N2  N7  N16 N19 );

my %flags;
$flags{$_} |= 1 for @input_array;
$flags{$_} |= 2 for @input_A;
$flags{$_} |= 4 for @input_B;

my %primaryCCO;
for (keys %flags) {
    next unless $flags{$_} & 1;
    print "$_: only 1 input is PI\n" if $flags{$_} == 3;
    print "$_: this is a wire\n" if $flags{$_} == 5;
    if( $flags{$_} == 7 ) {
        $primaryCCO{$_} = [1,1];
        print "$_: CCO = ( @{$primaryCCO{$_}} )\n";
    }
}

[download]

Remark: I have implied the desired logic from Athanasius output rather than studying your code, so I hope I got it right...

In reply to Re: Matching elements inside two array by hdb
in thread Matching elements inside two array by ameezys

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.