Beefy Boxes and Bandwidth Generously Provided by pair Networks
Perl Monk, Perl Meditation

Comment on

( #3333=superdoc: print w/replies, xml ) Need Help??
This is probably not the most efficient way to do this but it will work. This uses a hash to keep track of the duplicates.
my %hash; my @NewArray; #read all of the values of the array into keys of the hash, #this eliminates all of the duplicates foreach my $var (@OriginalArray) { $hash{$var}=0; } #this loop marks any variable that appeared twice in the #original array. foreach my $var2 (@OriginalArray) { $hash{$var}++; } #This fills a new array based on the information from the #above loop foreach my $var3 (keys (%hash)) { if (!$hash{$var3} > 1) { print "$hash{$var3} deleted\n"; } else { $NewArray[@NewArray]=$hash{$var3}; } } @OriginalArray = @NewArray;
update ++dpuu and thelenm for their much better and more efficient answers to this question.

In reply to Re: removing duplicated elements from array, with a difference by krujos
in thread removing duplicated elements from array, with a difference by Anonymous Monk

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, 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, 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.
  • Log In?

    What's my password?
    Create A New User
    and all is quiet...

    How do I use this? | Other CB clients
    Other Users?
    Others rifling through the Monastery: (5)
    As of 2018-06-24 15:34 GMT
    Find Nodes?
      Voting Booth?
      Should cpanminus be part of the standard Perl release?

      Results (126 votes). Check out past polls.