Beefy Boxes and Bandwidth Generously Provided by pair Networks
Pathologically Eclectic Rubbish Lister
 
PerlMonks  

How do I sort a list of numbers?

( #2252=categorized question: print w/ replies, xml ) Need Help??
Contributed by vroom on Jan 21, 2000 at 00:12 UTC
Q&A  > sorting


Answer: How do I sort a list of numbers?
contributed by vroom

you need to use the numerical comparison operator <=> inside of your sort function

@sorted=sort{$a <=> $b} @unsorted;
If you did
@sorted=sort @unsorted;
the sort function defaults to doing a textual comparison so 375 would be considered less than 4 since its first character 3 is less than 4.
Answer: How do I sort a list of numbers?
contributed by carrolte

Here is a twist: How to sort an array of referenced hashes, based on a perticular key value.

@sorted=sort{$$a{key} <=> $$b{key}} @unsorted;

carrolte

Please (register and) log in if you wish to add an answer



  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • 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?
    Username:
    Password:

    What's my password?
    Create A New User
    Chatterbox?
    and the web crawler heard nothing...

    How do I use this? | Other CB clients
    Other Users?
    Others studying the Monastery: (11)
    As of 2015-07-07 22:54 GMT
    Sections?
    Information?
    Find Nodes?
    Leftovers?
      Voting Booth?

      The top three priorities of my open tasks are (in descending order of likelihood to be worked on) ...









      Results (93 votes), past polls