Beefy Boxes and Bandwidth Generously Provided by pair Networks
Syntactic Confectionery Delight
 
PerlMonks  

Comment on

( #3333=superdoc: print w/ replies, xml ) Need Help??
Krambambuli,
Before answering your question, keep in mind I already allowed for both lists to fit in memory as a given. In reality, if you had a really large list you probably wouldn't be going through these contortions - you would probably sort on disk.

Here are a few links to help your main question

I guess your question boils down to: How can you do this with even less than 2N + M? blokhead has shown a solution that uses no memory but takes (N*M)^2 to run. TO give you a specific answer, one would need a specific problem. As I demonstrated in How many words does it take?, the trick to solving really hard problems in the general case (NP complete) is to exploit the details of the specific case (effectively turned into O(1)).

Cheers - L~R


In reply to Re^2: Challenge: Sorting Sums Of Sorted Series by Limbic~Region
in thread Challenge: Sorting Sums Of Sorted Series by Limbic~Region

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 wandering the Monastery: (6)
    As of 2014-11-28 04:11 GMT
    Sections?
    Information?
    Find Nodes?
    Leftovers?
      Voting Booth?

      My preferred Perl binaries come from:














      Results (193 votes), past polls