From the above matrix i need to find diagonal 1111 or 2222.

Do you mean that you are only interested in exactly 4 (not say 3) of '1's or '2's on a diagonal?

Are you only interested in those on this \ diagonal and not this / one?

Will the input always be 6 x 4?

If the answers to those three are yes, then a simple regex may be all you need:

print $_, "\n", 
    m[([12])(?:.{7}\1){3}]s ? 'matched' : 'failed' 
    for $a, $b, $c, $d;;

220021
000200
020222
020222
 failed

100000
010000
001000
000100
 matched

102000
010200
001020
000102
 matched

102000
010200
001020
000201
 failed

[download]
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.

In reply to Re: match diagonal text by BrowserUk
in thread match diagonal text by arivu198314

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.