Re: PHP console script vs C/C++/C#
| From: | Per Jessen | Date: | Sat, 19 Apr 2008 13:07:04 +0000 |
| Subject: | Re: PHP console script vs C/C++/C# | ||
| References: | 1 2 3 4 5 6 7 | Groups: | php.general |
| Request: | Send a blank email to php-general+get-273299@lists.php.net to get a copy of this message | ||
Robert Cummings wrote:
> You are correct about asymptotic bounds on algorithms; however,
> languages can still have a constant multiplier affect on an algorithm..
Absolutely. When it comes to "how long does it take to process 1000
elements", both language and hardware are critical factors. But the
algorithm efficiency remains constant.
> Asymptotic bounds (Big Oh) are useful, but their applicability isn't
> always universal. Some algorithms that are asymptotically inferior
> actually perform better on small input sets than their asymptotic
> superiors... I don't recall for certain, but bubblesort might be one
> such example.
Also true. Quick sort is such an example - in general it does really
well, but for certain data sets, it doesn't.
/Per Jessen, Zürich