Hi, Assuming that your array of numbers is:

@array= qw/10 10 48 22 34 54 23 65 22/;

The easiest way to do it is first sort the array

@sarray=sort(@array);

Now I am checking through every element in the array and storing it to a variable $last_element. The current element will be stored in $i. In the if condition, I am checking if the current element is equal to the last element and if the condition is false, I am printing the element. And here is the code:

@array= qw/10 10 48 22 34 54 23 65 22/;
@sarray=sort(@array);
my $last_element = "";
foreach $i (@sarray)
{
    if ($last_element ne $i)
    {
        print "$i\n";
        $last_element = $i;
    }
}

[download]

You can have answers for these types of questions at Super search.

In reply to Re: Extracting Unique Characters from a Array by rsriram
in thread Extracting Unique Characters from a Array by ps

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.