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Re: Qucksort for Linked List

From Juha Nieminen <nospam@thanks.invalid>
Newsgroups comp.lang.c++
Subject Re: Qucksort for Linked List
Date 2016-12-13 07:26 +0000
Organization Netfront http://www.netfront.net/
Message-ID <o2o7q6$2prn$1@adenine.netfront.net> (permalink)
References <dfa00771-7568-443b-ab45-174f0749a176@googlegroups.com> <K8mdnXD8M6gvVdzFnZ2dnUU7-aednZ2d@giganews.com> <o2m7v7$2s1e$1@adenine.netfront.net> <a8ydnTLbnp2tcNPFnZ2dnUU7-bGdnZ2d@giganews.com>

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Mr Flibble <flibbleREMOVETHISBIT@i42.co.uk> wrote:
>> Quicksort works with linked lists just fine. It's one of the standard
>> examples in language that use linked lists as its primary container
>> type (such as lisp and haskell).
>>
>> It's only when you start using some fancier optimizations that it
>> becomes more difficult. For example choosing the pivot point as
>> the median of the first, last and middle elements. (This is still
>> possible with linked lists after the first partition, but requires
>> extra bookkeeping.)
> 
> If by "works" you mean "works slowly, O(n)".

Its asymptotic behavior is exactly the same for linked lists as it is
for random access arrays. There's nothing in the basic quicksort algorithm
that requires random access.

Maybe you missed the part where I said that quicksort is one of those
classical quintessential examples in languages where linked lists are
the basic data container? Maybe your problem is that you just don't
know how to implement quicksort for linked lists. It's quite easy,
really.

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Qucksort for Linked List xerofoify <xerofoify@gmail.com> - 2016-12-02 10:14 -0800
  Re: Qucksort for Linked List Mr Flibble <flibbleREMOVETHISBIT@i42.co.uk> - 2016-12-02 19:17 +0000
    Re: Qucksort for Linked List Melzzzzz <mel@zzzzz.com> - 2016-12-02 22:09 +0100
      Re: Qucksort for Linked List Mr Flibble <flibbleREMOVETHISBIT@i42.co.uk> - 2016-12-02 21:26 +0000
        Re: Qucksort for Linked List Melzzzzz <mel@zzzzz.com> - 2016-12-02 22:37 +0100
          Re: Qucksort for Linked List Mr Flibble <flibbleREMOVETHISBIT@i42.co.uk> - 2016-12-02 21:41 +0000
    Re: Qucksort for Linked List Juha Nieminen <nospam@thanks.invalid> - 2016-12-12 13:16 +0000
      Re: Qucksort for Linked List Mr Flibble <flibbleREMOVETHISBIT@i42.co.uk> - 2016-12-12 18:32 +0000
        Re: Qucksort for Linked List Mr Flibble <flibbleREMOVETHISBIT@i42.co.uk> - 2016-12-12 18:34 +0000
        Re: Qucksort for Linked List asetofsymbols@gmail.com - 2016-12-12 10:44 -0800
          Re: Qucksort for Linked List Mr Flibble <flibbleREMOVETHISBIT@i42.co.uk> - 2016-12-12 21:30 +0000
        Re: Qucksort for Linked List Juha Nieminen <nospam@thanks.invalid> - 2016-12-13 07:26 +0000
          Re: Qucksort for Linked List Mr Flibble <flibbleREMOVETHISBIT@i42.co.uk> - 2016-12-13 17:51 +0000
            Re: Qucksort for Linked List Tim Rentsch <txr@alumni.caltech.edu> - 2016-12-13 14:52 -0800
            Re: Qucksort for Linked List Juha Nieminen <nospam@thanks.invalid> - 2016-12-14 10:26 +0000
            Re: Qucksort for Linked List "Alf P. Steinbach" <alf.p.steinbach+usenet@gmail.com> - 2016-12-14 13:05 +0100
              Re: Qucksort for Linked List Juha Nieminen <nospam@thanks.invalid> - 2016-12-14 14:06 +0000
                Re: Qucksort for Linked List "Alf P. Steinbach" <alf.p.steinbach+usenet@gmail.com> - 2016-12-14 16:59 +0100
              Re: Qucksort for Linked List Gareth Owen <gwowen@gmail.com> - 2016-12-14 20:19 +0000
                Re: Qucksort for Linked List Mr Flibble <flibbleREMOVETHISBIT@i42.co.uk> - 2016-12-14 21:23 +0000
                Re: Qucksort for Linked List Gareth Owen <gwowen@gmail.com> - 2016-12-14 21:42 +0000
                Re: Qucksort for Linked List Mr Flibble <flibbleREMOVETHISBIT@i42.co.uk> - 2016-12-14 22:43 +0000
                Re: Qucksort for Linked List Juha Nieminen <nospam@thanks.invalid> - 2016-12-16 11:02 +0000
                Re: Qucksort for Linked List Mr Flibble <flibbleREMOVETHISBIT@i42.co.uk> - 2016-12-16 23:00 +0000
                Re: Qucksort for Linked List Tim Rentsch <txr@alumni.caltech.edu> - 2016-12-16 23:00 -0800
                Re: Qucksort for Linked List Mr Flibble <flibbleREMOVETHISBIT@i42.co.uk> - 2016-12-17 20:17 +0000
                Re: Qucksort for Linked List Gareth Owen <gwowen@gmail.com> - 2016-12-18 21:15 +0000
                Re: Qucksort for Linked List Mr Flibble <flibbleREMOVETHISBIT@i42.co.uk> - 2016-12-18 21:49 +0000
                Re: Qucksort for Linked List Mr Flibble <flibbleREMOVETHISBIT@i42.co.uk> - 2016-12-18 21:51 +0000
                Re: Qucksort for Linked List Gareth Owen <gwowen@gmail.com> - 2016-12-18 21:52 +0000
                Re: Qucksort for Linked List Mr Flibble <flibbleREMOVETHISBIT@i42.co.uk> - 2016-12-18 21:56 +0000
                Re: Qucksort for Linked List Mr Flibble <flibbleREMOVETHISBIT@i42.co.uk> - 2016-12-18 22:04 +0000
                Re: Qucksort for Linked List Paavo Helde <myfirstname@osa.pri.ee> - 2016-12-19 00:22 +0200
                Re: Qucksort for Linked List "Alf P. Steinbach" <alf.p.steinbach+usenet@gmail.com> - 2016-12-19 00:18 +0100
                Re: Qucksort for Linked List David Brown <david.brown@hesbynett.no> - 2016-12-19 08:58 +0100
                Re: Qucksort for Linked List gwowen <gwowen@gmail.com> - 2016-12-19 06:17 -0800
                Re: Qucksort for Linked List Mr Flibble <flibbleREMOVETHISBIT@i42.co.uk> - 2016-12-19 20:14 +0000
                Re: Qucksort for Linked List woodbrian77@gmail.com - 2016-12-23 10:55 -0800
                Re: Qucksort for Linked List Daniel <danielaparker@gmail.com> - 2016-12-23 12:08 -0800
                Re: Qucksort for Linked List David Brown <david.brown@hesbynett.no> - 2016-12-27 10:39 +0100
                Re: Qucksort for Linked List Mr Flibble <flibble@i42.co.uk> - 2016-12-27 17:48 +0000
                Re: Qucksort for Linked List Mr Flibble <flibble@i42.co.uk> - 2016-12-27 17:53 +0000
                Re: Qucksort for Linked List Gareth Owen <gwowen@gmail.com> - 2016-12-27 18:52 +0000
                Re: Qucksort for Linked List Mr Flibble <flibble@i42.co.uk> - 2016-12-27 19:06 +0000
                Re: Qucksort for Linked List Gareth Owen <gwowen@gmail.com> - 2016-12-27 19:17 +0000
                Re: Qucksort for Linked List Mr Flibble <flibble@i42.co.uk> - 2016-12-27 21:05 +0000
                Re: Qucksort for Linked List Gareth Owen <gwowen@gmail.com> - 2016-12-27 21:15 +0000
                Re: Qucksort for Linked List Mr Flibble <flibble@i42.co.uk> - 2016-12-27 21:21 +0000
                Re: Qucksort for Linked List Gareth Owen <gwowen@gmail.com> - 2016-12-27 21:29 +0000
                Re: Qucksort for Linked List Mr Flibble <flibble@i42.co.uk> - 2016-12-27 21:33 +0000
                Re: Qucksort for Linked List David Brown <david.brown@hesbynett.no> - 2016-12-28 10:03 +0100
                Re: Qucksort for Linked List Gareth Owen <gwowen@gmail.com> - 2016-12-28 15:34 +0000
                Re: Qucksort for Linked List David Brown <david.brown@hesbynett.no> - 2016-12-29 09:38 +0100
                Re: Qucksort for Linked List Mr Flibble <flibble@i42.co.uk> - 2016-12-28 16:40 +0000
                Re: Qucksort for Linked List Daniel <danielaparker@gmail.com> - 2016-12-28 08:55 -0800
                Re: Qucksort for Linked List Gareth Owen <gwowen@gmail.com> - 2016-12-28 17:02 +0000
                Re: Qucksort for Linked List Mr Flibble <flibble@i42.co.uk> - 2016-12-28 17:12 +0000
                Re: Qucksort for Linked List Mr Flibble <flibble@i42.co.uk> - 2016-12-28 17:21 +0000
                Re: Qucksort for Linked List Mr Flibble <flibbleREMOVETHISBIT@i42.co.uk> - 2016-12-29 11:05 -0600
                Re: Qucksort for Linked List Gareth Owen <gwowen@gmail.com> - 2016-12-29 17:43 +0000
                Re: Qucksort for Linked List David Brown <david.brown@hesbynett.no> - 2016-12-30 09:48 +0100
                Re: Qucksort for Linked List Gareth Owen <gwowen@gmail.com> - 2016-12-30 11:37 +0000
                Re: Qucksort for Linked List David Brown <david.brown@hesbynett.no> - 2016-12-30 13:23 +0100
                Re: Qucksort for Linked List David Brown <david.brown@hesbynett.no> - 2016-12-29 11:00 +0100
                Re: Qucksort for Linked List David Brown <david.brown@hesbynett.no> - 2016-12-29 09:43 +0100
                Re: Qucksort for Linked List Gareth Owen <gwowen@gmail.com> - 2016-12-18 22:56 +0000
                Re: Qucksort for Linked List Gareth Owen <gwowen@gmail.com> - 2016-12-18 22:52 +0000
                Re: Qucksort for Linked List Mr Flibble <flibbleREMOVETHISBIT@i42.co.uk> - 2016-12-18 23:07 +0000
                Re: Qucksort for Linked List Gareth Owen <gwowen@gmail.com> - 2016-12-19 05:48 +0000
                Re: Qucksort for Linked List Juha Nieminen <nospam@thanks.invalid> - 2016-12-19 08:09 +0000
                Re: Qucksort for Linked List Juha Nieminen <nospam@thanks.invalid> - 2016-12-19 08:06 +0000
                Re: Qucksort for Linked List leigh.v.johnston@googlemail.com - 2016-12-19 04:46 -0800
                Re: Qucksort for Linked List bartekltg <bartekltg@gmail.com> - 2016-12-19 15:04 +0100
                Re: Qucksort for Linked List gwowen <gwowen@gmail.com> - 2016-12-19 06:40 -0800
                Re: Qucksort for Linked List bartekltg <bartekltg@gmail.com> - 2016-12-19 18:48 +0100
                Re: Qucksort for Linked List Gareth Owen <gwowen@gmail.com> - 2016-12-19 18:53 +0000
                Re: Qucksort for Linked List bartekltg <bartekltg@gmail.com> - 2016-12-19 21:26 +0100
                Re: Qucksort for Linked List Gareth Owen <gwowen@gmail.com> - 2016-12-19 20:32 +0000
                Re: Qucksort for Linked List Mr Flibble <flibbleREMOVETHISBIT@i42.co.uk> - 2016-12-19 19:09 +0000
                Re: Qucksort for Linked List Mr Flibble <flibbleREMOVETHISBIT@i42.co.uk> - 2016-12-19 19:14 +0000
                Re: Qucksort for Linked List Gareth Owen <gwowen@gmail.com> - 2016-12-19 19:31 +0000
                Re: Qucksort for Linked List Mr Flibble <flibbleREMOVETHISBIT@i42.co.uk> - 2016-12-19 19:45 +0000
                Re: Qucksort for Linked List Mr Flibble <flibbleREMOVETHISBIT@i42.co.uk> - 2016-12-19 20:19 +0000
                Re: Qucksort for Linked List Juha Nieminen <nospam@thanks.invalid> - 2016-12-20 07:18 +0000
                Re: Qucksort for Linked List leigh.v.johnston@googlemail.com - 2016-12-20 04:31 -0800
                Re: Qucksort for Linked List Juha Nieminen <nospam@thanks.invalid> - 2016-12-21 07:08 +0000
                Re: Qucksort for Linked List Mr Flibble <flibbleREMOVETHISBIT@i42.co.uk> - 2016-12-21 19:39 +0000
                Re: Qucksort for Linked List Gareth Owen <gwowen@gmail.com> - 2016-12-21 20:54 +0000
                Re: Qucksort for Linked List Gareth Owen <gwowen@gmail.com> - 2016-12-21 19:28 +0000
                Re: Qucksort for Linked List Mr Flibble <flibbleREMOVETHISBIT@i42.co.uk> - 2016-12-21 19:43 +0000
                Re: Qucksort for Linked List Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-12-21 20:34 +0000
                Re: Qucksort for Linked List Gareth Owen <gwowen@gmail.com> - 2016-12-21 20:53 +0000
                Re: Qucksort for Linked List Mr Flibble <flibbleREMOVETHISBIT@i42.co.uk> - 2016-12-21 20:58 +0000
                Re: Qucksort for Linked List Gareth Owen <gwowen@gmail.com> - 2016-12-21 23:34 +0000
                Re: Qucksort for Linked List Mr Flibble <flibbleREMOVETHISBIT@i42.co.uk> - 2016-12-22 00:19 +0000
                Re: Qucksort for Linked List Juha Nieminen <nospam@thanks.invalid> - 2017-01-04 07:04 +0000
                Re: Qucksort for Linked List Daniel <danielaparker@gmail.com> - 2017-01-04 07:18 -0800
                Re: Qucksort for Linked List Gareth Owen <gwowen@gmail.com> - 2017-01-04 18:39 +0000
                Re: Qucksort for Linked List Daniel <danielaparker@gmail.com> - 2017-01-05 07:29 -0800
                Re: Qucksort for Linked List Mr Flibble <flibbleREMOVETHISBIT@i42.co.uk> - 2017-01-05 21:21 +0000
                Re: Qucksort for Linked List Ian Collins <ian-news@hotmail.com> - 2017-01-06 10:35 +1300
                Re: Qucksort for Linked List Tim Rentsch <txr@alumni.caltech.edu> - 2016-12-22 21:43 -0800
                Re: Qucksort for Linked List Tim Rentsch <txr@alumni.caltech.edu> - 2016-12-22 22:09 -0800
                Re: Qucksort for Linked List Mr Flibble <flibbleREMOVETHISBIT@i42.co.uk> - 2016-12-23 17:00 +0000
                Re: Qucksort for Linked List Tim Rentsch <txr@alumni.caltech.edu> - 2016-12-23 12:03 -0800
                Re: Qucksort for Linked List Mr Flibble <flibbleREMOVETHISBIT@i42.co.uk> - 2016-12-23 20:25 +0000
                Re: Qucksort for Linked List Gareth Owen <gwowen@gmail.com> - 2016-12-23 20:56 +0000
                Re: Qucksort for Linked List Mr Flibble <flibbleREMOVETHISBIT@i42.co.uk> - 2016-12-23 22:02 +0000
                Re: Qucksort for Linked List Mr Flibble <flibbleREMOVETHISBIT@i42.co.uk> - 2016-12-23 22:14 +0000
                Re: Qucksort for Linked List Tim Rentsch <txr@alumni.caltech.edu> - 2016-12-29 13:56 -0800
                Re: Qucksort for Linked List Mr Flibble <flibble@i42.co.uk> - 2016-12-29 23:26 +0000
                Re: Qucksort for Linked List Tim Rentsch <txr@alumni.caltech.edu> - 2016-12-29 20:25 -0800
                Re: Qucksort for Linked List Juha Nieminen <nospam@thanks.invalid> - 2017-01-04 07:07 +0000
                Re: Qucksort for Linked List Tim Rentsch <txr@alumni.caltech.edu> - 2017-01-26 22:40 -0800
  Re: Qucksort for Linked List xerofoify <xerofoify@gmail.com> - 2016-12-02 13:47 -0800
    Re: Qucksort for Linked List ruben safir <ruben@mrbrklyn.com> - 2016-12-02 17:38 -0500
      Re: Qucksort for Linked List xerofoify <xerofoify@gmail.com> - 2016-12-02 14:53 -0800
        Re: Qucksort for Linked List Jerry Stuckle <jstucklex@attglobal.net> - 2016-12-02 19:50 -0500
        Re: Qucksort for Linked List ruben safir <ruben@mrbrklyn.com> - 2016-12-02 21:17 -0500
          Re: Qucksort for Linked List xerofoify <xerofoify@gmail.com> - 2016-12-02 20:44 -0800
            Re: Qucksort for Linked List xerofoify <xerofoify@gmail.com> - 2016-12-02 20:52 -0800
              Re: Qucksort for Linked List Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-12-03 11:07 +0000
            Re: Qucksort for Linked List ruben safir <ruben@mrbrklyn.com> - 2016-12-03 13:38 -0500
    Re: Qucksort for Linked List Öö Tiib <ootiib@hot.ee> - 2016-12-03 01:46 -0800
      Re: Qucksort for Linked List Juha Nieminen <nospam@thanks.invalid> - 2016-12-12 13:18 +0000
  Re: Qucksort for Linked List "Alf P. Steinbach" <alf.p.steinbach+usenet@gmail.com> - 2016-12-03 01:16 +0100
    Re: Qucksort for Linked List bartekltg <bartekltg@gmail.com> - 2016-12-03 08:25 +0100
  Re: Qucksort for Linked List bartekltg <bartekltg@gmail.com> - 2016-12-03 08:05 +0100

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