Beefy Boxes and Bandwidth Generously Provided by pair Networks RobOMonk
Just another Perl shrine
 
PerlMonks  

Comment on

( #3333=superdoc: print w/ replies, xml ) Need Help??

You say you want to recursively sort an array, so I'll assume you've already done something like:

my @sorted = sort keys %hash;

From there, you mentioned you want to recursively take 10 elements at a time. It's very easy to do this iteratively, but to specifically do it recursively as you've asked is easy, too:

my @sorted = ('A'..'Z'); # probably sort keys %some_hash; reduce(@sorted); sub reduce { my @ten = splice(@_, 0, 10); return if (!@ten); # Base case # return if (@ten < 10); # Or do you want to stop if < 10 elements +? print join(',',@ten) . "\n"; return reduce(@_); # Recursion case, remainder of array }

Have a look at this page on recursion if you need to brush up on your recursion theory. For example, you can switch the recursion case and the processing step, and of course you may want to return a value derived from your computations on @sorted. I leave these as an exercise to the OP. :-)


In reply to Re: recursively reduce an array by rjt
in thread recursively reduce an array by Anonymous Monk

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!
  • 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
  • Outside of code tags, you may need to use entities for some characters:
            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 drinking their drinks and smoking their pipes about the Monastery: (3)
    As of 2014-04-21 00:50 GMT
    Sections?
    Information?
    Find Nodes?
    Leftovers?
      Voting Booth?

      April first is:







      Results (489 votes), past polls