On Wed, 2002-03-27 at 07:25, Sudarsan Raghavan wrote:
> Robert Graham wrote:
>
> > Hi Ozgur
> >
> > You can use the following:
> >
> > @data = (10,45,2,439);
> > ($min,$max) = (sort {$a <=> $b} @data)[0,$#data];
>
> IMHO sorting a list to find the max and min element is not a good idea.
> The sort is of O(nlgn) and the usual
> run through the list to find the max element is O(n). This is not of
> significance when n is small, at the same
> time this is not a method that should be followed for this task.
Sorting would not be a good idea if you were to write the sort yourself;
however, sort is implemented in C which is much faster than Perl. This
thread was discussed at length earlier. If you look in the archives you
can see that using sort takes about half the time a foreach loop takes
even though the using foreach loop is a more efficient algorithm.
The lesson to learn from this is that you should use builtin functions
over your own. Or possibly, when you care about efficiency use
Inline::C and a good algorithm.
>
> >
> >
> > Regards
> > Robert
> >
> > -----Original Message-----
> > From: OZGUR GENC [mailto:[EMAIL PROTECTED]]
> > Sent: 27 March 2002 13:06
> > To: [EMAIL PROTECTED]
> > Subject: Maximum ,Minumum
> >
> > Hi All,
> > Does anyone help me about how I can find the maximum and minumum element
> > of an array?
> > Ozgur
> >
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