you could try something like this
for(my $i=0;$i< scalar(@aoa);$i++) {
for(my $x=0;$x < scalar($aoa$i);$x++) {
$hash{$i} = $hash{$i} + $aoa$i$x;
}
}

my @res = ();
foreach my $key (sort keys %hash) {
push(@res,(($hash{$key}) / 4));
}
If you don't know the length of the aoa then you could make the '4' in '/ 4' into a var. Or you could do a hash that has more of a struct feel to it like:
$hash{$i}{'total'} = <total of the one column of values>
$hash{$i}{'array_length'} = #

Not sure how much faster this would be than what you have, but it should be fairly fast since you only go through the array of arrays once and then compute the average once. George in NC

In reply to Re: Averaging Elements in Array of Array by Anonymous Monk
in thread Averaging Elements in Array of Array by neversaint

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.