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Groups > comp.lang.c++ > #70928
| From | Bo Persson <bo@bo-persson.se> |
|---|---|
| Newsgroups | comp.lang.c++ |
| Subject | Re: C++ threshold for "stupid" sorting algorithms (O(n^2)) |
| Date | 2020-01-01 15:16 +0100 |
| Message-ID | <h73nu7F1tj8U1@mid.individual.net> (permalink) |
| References | <qui2k6$rst$1@dont-email.me> <h73hv9Fne1U1@mid.individual.net> <qui5mk$ath$2@dont-email.me> |
On 2020-01-01 at 14:09, Soviet_Mario wrote:
> On 01/01/2020 13:34, Bo Persson wrote:
>> On 2020-01-01 at 13:17, Soviet_Mario wrote:
>>> In your experience, what is (roughly) a reasonable threshold (n) in
>>> terms of convenience of passing from stupid algorithms (bubblesort,
>>> gnomesort) to better and more complex ones ?
>>>
>>> I know this depends a lot also on HW.
>>>
>>
>> It also depends on the data that is to be sorted.
>>
>> For example, if the data is already almost correctly sorted, that will
>> be the best case for bubblesort but the worst case for quicksort.
>
> I won't even be able to write a stable version of quick sort :\
>
No, of course not.
Just saying that there are cases where a "stupid" algorithm can be O(n)
and a "smart" one be O(n^2). And that it can be data dependent, and not
just depend on the size.
That might make it hard to find a useful general threshold.
Bo Persson
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C++ threshold for "stupid" sorting algorithms (O(n^2)) Soviet_Mario <SovietMario@CCCP.MIR> - 2020-01-01 13:17 +0100
Re: C++ threshold for "stupid" sorting algorithms (O(n^2)) Bonita Montero <Bonita.Montero@gmail.com> - 2020-01-01 13:25 +0100
Re: C++ threshold for "stupid" sorting algorithms (O(n^2)) Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-01-01 17:33 +0000
Re: C++ threshold for "stupid" sorting algorithms (O(n^2)) Bonita Montero <Bonita.Montero@gmail.com> - 2020-01-05 03:54 +0100
Re: C++ threshold for "stupid" sorting algorithms (O(n^2)) Bonita Montero <Bonita.Montero@gmail.com> - 2020-01-05 04:04 +0100
Re: C++ threshold for "stupid" sorting algorithms (O(n^2)) Mr Flibble <flibbleREMOVETHISBIT@i42.co.uk> - 2020-01-05 03:59 +0000
Re: C++ threshold for "stupid" sorting algorithms (O(n^2)) Bonita Montero <Bonita.Montero@gmail.com> - 2020-01-05 05:03 +0100
Re: C++ threshold for "stupid" sorting algorithms (O(n^2)) Soviet_Mario <SovietMario@CCCP.MIR> - 2020-01-05 21:13 +0100
Re: C++ threshold for "stupid" sorting algorithms (O(n^2)) Bonita Montero <Bonita.Montero@gmail.com> - 2020-01-06 05:50 +0100
Re: C++ threshold for "stupid" sorting algorithms (O(n^2)) Bonita Montero <Bonita.Montero@gmail.com> - 2020-01-06 06:55 +0100
Re: C++ threshold for "stupid" sorting algorithms (O(n^2)) Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-01-05 04:20 +0000
Re: C++ threshold for "stupid" sorting algorithms (O(n^2)) Bonita Montero <Bonita.Montero@gmail.com> - 2020-01-05 05:26 +0100
Re: C++ threshold for "stupid" sorting algorithms (O(n^2)) Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-01-05 13:33 +0000
Re: C++ threshold for "stupid" sorting algorithms (O(n^2)) Bonita Montero <Bonita.Montero@gmail.com> - 2020-01-05 15:01 +0100
Re: C++ threshold for "stupid" sorting algorithms (O(n^2)) Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-01-05 22:26 +0000
Re: C++ threshold for "stupid" sorting algorithms (O(n^2)) Bonita Montero <Bonita.Montero@gmail.com> - 2020-01-06 05:39 +0100
Re: C++ threshold for "stupid" sorting algorithms (O(n^2)) Öö Tiib <ootiib@hot.ee> - 2020-01-05 23:54 -0800
Re: C++ threshold for "stupid" sorting algorithms (O(n^2)) Bonita Montero <Bonita.Montero@gmail.com> - 2020-01-06 08:59 +0100
Re: C++ threshold for "stupid" sorting algorithms (O(n^2)) Öö Tiib <ootiib@hot.ee> - 2020-01-06 01:02 -0800
Re: C++ threshold for "stupid" sorting algorithms (O(n^2)) Jorgen Grahn <grahn+nntp@snipabacken.se> - 2020-01-06 09:34 +0000
Re: C++ threshold for "stupid" sorting algorithms (O(n^2)) Bonita Montero <Bonita.Montero@gmail.com> - 2020-01-06 10:36 +0100
Re: C++ threshold for "stupid" sorting algorithms (O(n^2)) Öö Tiib <ootiib@hot.ee> - 2020-01-06 03:33 -0800
Re: C++ threshold for "stupid" sorting algorithms (O(n^2)) Bonita Montero <Bonita.Montero@gmail.com> - 2020-01-06 12:59 +0100
Re: C++ threshold for "stupid" sorting algorithms (O(n^2)) Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-01-06 22:54 +0000
Re: C++ threshold for "stupid" sorting algorithms (O(n^2)) Bonita Montero <Bonita.Montero@gmail.com> - 2020-01-07 04:57 +0100
Re: C++ threshold for "stupid" sorting algorithms (O(n^2)) Melzzzzz <Melzzzzz@zzzzz.com> - 2020-01-07 07:51 +0000
Re: C++ threshold for "stupid" sorting algorithms (O(n^2)) Melzzzzz <Melzzzzz@zzzzz.com> - 2020-01-05 15:16 +0000
Re: C++ threshold for "stupid" sorting algorithms (O(n^2)) Bonita Montero <Bonita.Montero@gmail.com> - 2020-01-05 05:50 +0100
Re: C++ threshold for "stupid" sorting algorithms (O(n^2)) Bo Persson <bo@bo-persson.se> - 2020-01-01 13:34 +0100
Re: C++ threshold for "stupid" sorting algorithms (O(n^2)) Soviet_Mario <SovietMario@CCCP.MIR> - 2020-01-01 14:09 +0100
Re: C++ threshold for "stupid" sorting algorithms (O(n^2)) Bo Persson <bo@bo-persson.se> - 2020-01-01 15:16 +0100
Re: C++ threshold for "stupid" sorting algorithms (O(n^2)) Robert Wessel <robertwessel2@yahoo.com> - 2020-01-01 09:24 -0600
Re: C++ threshold for "stupid" sorting algorithms (O(n^2)) Soviet_Mario <SovietMario@CCCP.MIR> - 2020-01-01 17:12 +0100
Re: C++ threshold for "stupid" sorting algorithms (O(n^2)) Öö Tiib <ootiib@hot.ee> - 2020-01-02 15:11 -0800
Re: C++ threshold for "stupid" sorting algorithms (O(n^2)) Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-01-10 13:53 -0800
Re: C++ threshold for "stupid" sorting algorithms (O(n^2)) Robert Wessel <robertwessel2@yahoo.com> - 2020-01-10 16:45 -0600
Re: C++ threshold for "stupid" sorting algorithms (O(n^2)) Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-01-21 03:11 -0800
Re: C++ threshold for "stupid" sorting algorithms (O(n^2)) Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-01-21 15:04 +0000
Re: C++ threshold for "stupid" sorting algorithms (O(n^2)) Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-01-27 11:52 -0800
Re: C++ threshold for "stupid" sorting algorithms (O(n^2)) Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-01-30 00:32 +0000
Re: C++ threshold for "stupid" sorting algorithms (O(n^2)) Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-02-15 05:30 -0800
Re: C++ threshold for "stupid" sorting algorithms (O(n^2)) Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-02-15 16:39 +0000
Re: C++ threshold for "stupid" sorting algorithms (O(n^2)) Christian Gollwitzer <auriocus@gmx.de> - 2020-01-02 11:28 +0100
Re: C++ threshold for "stupid" sorting algorithms (O(n^2)) Soviet_Mario <SovietMario@CCCP.MIR> - 2020-01-02 19:46 +0100
Re: C++ threshold for "stupid" sorting algorithms (O(n^2)) Bonita Montero <Bonita.Montero@gmail.com> - 2020-01-02 20:00 +0100
Re: C++ threshold for "stupid" sorting algorithms (O(n^2)) Bonita Montero <Bonita.Montero@gmail.com> - 2020-01-03 07:37 +0100
Re: C++ threshold for "stupid" sorting algorithms (O(n^2)) Soviet_Mario <SovietMario@CCCP.MIR> - 2020-01-03 20:06 +0100
Re: C++ threshold for "stupid" sorting algorithms (O(n^2)) Öö Tiib <ootiib@hot.ee> - 2020-01-03 11:12 -0800
Re: C++ threshold for "stupid" sorting algorithms (O(n^2)) Soviet_Mario <SovietMario@CCCP.MIR> - 2020-01-04 17:58 +0100
Re: C++ threshold for "stupid" sorting algorithms (O(n^2)) David Brown <david.brown@hesbynett.no> - 2020-01-03 21:25 +0100
Re: C++ threshold for "stupid" sorting algorithms (O(n^2)) Melzzzzz <Melzzzzz@zzzzz.com> - 2020-01-03 21:00 +0000
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