Beefy Boxes and Bandwidth Generously Provided by pair Networks
Do you know where your variables are?
 
PerlMonks  

Comment on

( #3333=superdoc: print w/ replies, xml ) Need Help??
There's an interesting number pattern:
1 1 1 2 1 1 2 1 1 1 1 1 2 2 1 3 1 2 2 1 1
For those of you that don't know this pattern, each line is a description of the previous line. For instance, the line "1 1 1 2 2 1" describes the line "1 2 1 1", because it says "one 1, one 2, two 1's". And so on.

On PerlGuru.com, there was recently a quiz to come up with a good (fast? short?) way to create these lines in Perl. I came up with a very short solution, as well as a very fast solution. These are in the form:
@a = (1); for (1..10) { print "@a\n"; # real juicy stuff here }
I'd like to see possible solutions from people. My fastest code executed the 1..10 loop 500 times in 2.40 seconds, and a 1..35 loop 10 times in 43.51 seconds. My shortest one is a bit slower, because it uses a regex, at 3.76 seconds and 57.35 seconds.

In reply to Generating a Pattern by japhy

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: (11)
    As of 2014-12-22 01:48 GMT
    Sections?
    Information?
    Find Nodes?
    Leftovers?
      Voting Booth?

      Is guessing a good strategy for surviving in the IT business?





      Results (110 votes), past polls