Beefy Boxes and Bandwidth Generously Provided by pair Networks
Don't ask to ask, just ask

comment on

( #3333=superdoc: print w/replies, xml ) Need Help??
I think O() analysis definitely has its uses. It's good for determining "all else being equal, which algorithm will be faster?" It doesn't say anything about implementations. I'm pretty sure I could write a poor implementation of an O(n log n) algorithm that runs slower than a good implementation of an O(n^2) algorithm (for sufficiently small datasets. How small? Small enough so the O(n log n) implementation is slower :) But in general, the O(n log n) solution will be faster, as your data set increases in size, and as you tweak the "all else" in your implementation to get it as close to "equal" as possible.

I wasn't a huge fan of O() notation in college either, once we started analyzing the more complicated algorithms. Not because it was inaccurate, but because it was difficult, and "no one uses those algorithms anyway." However, now I'm glad I did it, because after doing all the hard analysis, the easy analysis which I do use regularly (though not explicitly) comes intuitively.


In reply to RE: Sorting a list of IP addresses (aka Why I hate Big O) by ferrency
in thread Sorting a list of IP addresses (aka Why I hate Big O) by jeffa

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 the web crawler heard nothing...

    How do I use this? | Other CB clients
    Other Users?
    Others having an uproarious good time at the Monastery: (2)
    As of 2020-02-23 08:43 GMT
    Find Nodes?
      Voting Booth?
      What numbers are you going to focus on primarily in 2020?

      Results (102 votes). Check out past polls.