My only advice is to just do it. You can compile the arrays into a list of arrays, or you could add them to a hash where you give each a name. Either way, just iterate on each array and use List::Util->reduce to determine the position of the max element.

use List::Util qw(reduce);

use strict;
use warnings;

my @array1 = (1,2,3,4,8);
my @array2 = (1,4,2,4,5);
my @array3 = (1,6,1,7,5);

for my $array (\@array1, \@array2, \@array3) {
    my $max_pos = reduce {$array->[$b] > $array->[$a] ? $b : $a} keys 
+@$array;
    print "Max is $array->[$max_pos] at position $max_pos\n";
}

=prints
Max is 8 at position 4
Max is 5 at position 4
Max is 7 at position 3
=cut

[download]

In reply to Re: how to loop through many arrays by wind
in thread how to loop through many arrays by david_lyon

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.