This will do the trick in Perl:
use strict;
use warnings;

my @megaMotif = (
    [ "AGCT", "0", "370", "1" ],
    [ "AGGT", "3", "52",  "1" ],
    [ "TGAA", "2", "233", "0" ],
    [ "AGAG", "0", "32",  "0" ]
);

my @megaMotifSorted =
    sort { $a->[1] <=> $b->[1] || $a->[3] <=> $b->[3] }
    @megaMotif;

[download]
Please note the following two things:
  1. The name of the language is "Perl", not "PERL".
  2. When making your array, the outhernmost brackets should be parentheses "( ... )" and not square brackets "[ ... ]". Square brackets will make your list into an anonymous array rather than a normal array. In your version @megaMotif only contains one element, such as "ARRAY(some_hex_value)". Doing a sort on an array with only one element will not bring you very far.

    Did you just change the brackets in your posting or am I going mad? I could have sworn I just copied-and-pasted your code in my editor and the outernmost brackets were square and not round. If you did change them afterwards, make a little note of it otherwise it gets difficult to follow the discussion.

CountZero

A program should be light and agile, its subroutines connected like a string of pearls. The spirit and intent of the program should be retained throughout. There should be neither too little or too much, neither needless loops nor useless variables, neither lack of structure nor overwhelming rigidity." - The Tao of Programming, 4.1 - Geoffrey James

In reply to Re: Sort a 2D array based on 2 columns by CountZero
in thread Sort a 2D array based on 2 columns by masala_curry

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.