sort()

[David]

I'm having a bit of difficulty sorting images named in sequential order.

image1.jpg

[Evertjan.]

Re: sort()

David wrote on 04 mei 2005 in comp.lang.javas cript:[color=blue]
> I'm having a bit of difficulty sorting images named in sequential order.
>
> image1.jpg[/color]

This will do a alphanumeric sort:

=============== =======

s = "image4.jpg,ima ge9.jpg,image11 1.jpg,image2.jp g,image1.jpg"

s = s.split(',').so rt().join(',')

alert(s)

=============== ========

resulting in:

image1.jpg,imag e111.jpg,image2 .jpg,image4.jpg ,image9.jpg

--
Evertjan.
The Netherlands.
(Replace all crosses with dots in my emailaddress)

[David]

Re: sort()

Thanks Evertjan but I need the result like so...

image1.jpg,imag e2.jpg,image4.j pg,image9.jpg ,image111.jpg

David





"Evertjan." <exjxw.hannivoo rt@interxnl.net > wrote in message
news:Xns964CB61 B18CB5eejj99@19 4.109.133.29...[color=blue]
> David wrote on 04 mei 2005 in comp.lang.javas cript:[color=green]
> > I'm having a bit of difficulty sorting images named in sequential order.
> >
> > image1.jpg[/color]
>
> This will do a alphanumeric sort:
>
> =============== =======
>
> s = "image4.jpg,ima ge9.jpg,image11 1.jpg,image2.jp g,image1.jpg"
>
> s = s.split(',').so rt().join(',')
>
> alert(s)
>
> =============== ========
>
> resulting in:
>
> image1.jpg,imag e111.jpg,image2 .jpg,image4.jpg ,image9.jpg
>
> --
> Evertjan.
> The Netherlands.
> (Replace all crosses with dots in my emailaddress)
>[/color]

[Lee]

Re: sort()

David said:[color=blue]
>
>I'm having a bit of difficulty sorting images named in sequential order.
>
>image1.jpg[/color]


If you're asking for help, you'll have to give us more to work with.

[Dr John Stockton]

Re: sort()

JRS: In article <eq6ee.28100$r8 1.1128@trnddc02 >, dated Wed, 4 May 2005
16:06:34, seen in news:comp.lang. javascript, David <right@dd.com > posted
:[color=blue]
> I need the result like so...
>
>image1.jpg,ima ge2.jpg,image4. jpg,image9.jpg ,image111.jpg[/color]


In such cases, it is far better to arrange that the numeric part is
fixed-width, by using leading zeroes.


If there is much data, I suggest first transform it to that form, then
use a standard sort, then strip leading zeroes.


Otherwise, use a user-defined comparison function :
* Apply a RegExp to each of the comparands, splitting into letter and
number parts.
* Compare the letter parts, as strings, with > and <, returning +1 or -1
accordingly
* If not yet returned, return the difference of the numeric parts; use
of subtraction forces conversion to numbers.

Note that a comparison function is generally called more than N times in
sorting N items, so the entries will be split more than 2N times.

I don't have time to write and test code tonight.

--
© John Stockton, Surrey, UK. ?@merlyn.demon. co.uk Turnpike v4.00 IE 4 ©
<URL:http://www.jibbering.c om/faq/> JL/RC: FAQ of news:comp.lang. javascript
<URL:http://www.merlyn.demo n.co.uk/js-index.htm> jscr maths, dates, sources.
<URL:http://www.merlyn.demo n.co.uk/> TP/BP/Delphi/jscr/&c, FAQ items, links.

[David]

Re: sort()

Thanks Dr. John,

I think I have enough to go on thanks to the other responses. If I muck it
up .. I'll be back :-)

David





"Dr John Stockton" <spam@merlyn.de mon.co.uk> wrote in message
news:sfCH7OJbPU eCFwmY@merlyn.d emon.co.uk...[color=blue]
> JRS: In article <eq6ee.28100$r8 1.1128@trnddc02 >, dated Wed, 4 May 2005
> 16:06:34, seen in news:comp.lang. javascript, David <right@dd.com > posted
> :[color=green]
> > I need the result like so...
> >
> >image1.jpg,ima ge2.jpg,image4. jpg,image9.jpg ,image111.jpg[/color]
>
>
> In such cases, it is far better to arrange that the numeric part is
> fixed-width, by using leading zeroes.
>
>
> If there is much data, I suggest first transform it to that form, then
> use a standard sort, then strip leading zeroes.
>
>
> Otherwise, use a user-defined comparison function :
> * Apply a RegExp to each of the comparands, splitting into letter and
> number parts.
> * Compare the letter parts, as strings, with > and <, returning +1 or -1
> accordingly
> * If not yet returned, return the difference of the numeric parts; use
> of subtraction forces conversion to numbers.
>
> Note that a comparison function is generally called more than N times in
> sorting N items, so the entries will be split more than 2N times.
>
> I don't have time to write and test code tonight.
>
> --
> © John Stockton, Surrey, UK. ?@merlyn.demon. co.uk Turnpike v4.00 IE[/color]
4 ©[color=blue]
> <URL:http://www.jibbering.c om/faq/> JL/RC: FAQ of[/color]
news:comp.lang. javascript[color=blue]
> <URL:http://www.merlyn.demo n.co.uk/js-index.htm> jscr maths, dates,[/color]
sources.[color=blue]
> <URL:http://www.merlyn.demo n.co.uk/> TP/BP/Delphi/jscr/&c, FAQ items,[/color]
links.