First you need to parse your file. What have you already tried? Can we see your code?

(When you post your code, please remember to read the Writeup Formatting Tips.)

now i want to make each line as an array and give the first one as the name of the
like this
@IL12::1::287 = ('6','-17','-9','-21','-24','-15','-2','11','4','4','-15','-26','-16','-9','-18','-25','27','17','6')
Please don't use variables as variable names (yes this still applies).

Second, you'd do better to store your arrays as references in a hash, where the keys to the hash could be 'IL12::1::287', 'IL12::1::329', etc.
(Update: thezip gives you an example of the data-structure below.)

As for the array "common elements" problem, the usual way to solve that is to build a hash containing the elements of the first array as keys, then to loop through the elements of the second array testing for existence in the hash.

# you have @arr1 and @arr2 my %lookup = map { $_ => undef } @arr1; my @common = grep { exists $lookup{$_} } @arr2;
-David

In reply to Re: how to make first element of an string as a the array name by erroneousBollock
in thread how to make first element of an string as a the array name by koleti

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.