Hello Perlmonks!
I have a problem and I need advice, because I can't think of how exactly to proceed.
In a script of mine, I create an array of arrays, of the following type:
@my_arr=(
[1,    11,    0,    0],
[12,    109,    0,    0]
[16,    1,    16,    0],
[14,    14,    2,    0],
[45,    16,    5,    4]
);

[download]

What I want to do is:
1) Start from the last element (let's name it k), which in my case is $my_arr[5][4] -> 4 (this is elemnt l).
2) Find the element $my_arr[l][3], which is $my_arr[4][3], which is 2 (this is element m).
3) Then, find the element $my_arr[m][2], which is $my_arr[2][2], which is 1 (element n).
4) Finally, find the element $my_arr[n][1], which is $my_arr[1][1], which is 12.
The total string of numbers will be: 4-2-1-12.
I can't think of the kind of loop i must use...

In reply to Read array of arrays in reverse order by Anonymous Monk

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.