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Groups > comp.lang.javascript > #27266
| From | Thomas 'PointedEars' Lahn <PointedEars@web.de> |
|---|---|
| Newsgroups | comp.lang.javascript |
| Subject | Re: Best search algorithm to find a condition within a range. |
| Date | 2015-04-09 16:14 +0200 |
| Organization | PointedEars Software (PES) |
| Message-ID | <1516636.lEZloIClQ3@PointedEars.de> (permalink) |
| References | (9 earlier) <5902185.dpbNY2YNC7@PointedEars.de> <XnsA475E324A1947eejj99@194.109.133.246> <1936096.bgrWbIOXpn@PointedEars.de> <XnsA477904D03C6Aeejj99@194.109.133.246> <mg5ss7$8i5$2@solani.org> |
Christoph M. Becker wrote: > Evertjan. wrote: >> The advice given was to add zero's in front of the "shortest" stringified >> number. >> >> There is no way to do that without first retrieving the "length" of both >> and assessing the difference to know how many zerows to add. >> >> So the length difference so already there, and there is no need to add >> the zero characters when this difference != 0, since that value already >> answers the comparison. And there is no need to add them when they are >> equal too, btw. > > Why would someone try to do integer arithmetic on strings? I would > suggest to use a large base, where each digit is an element of an array. > IIRC Ben (Bacarisse) has already suggest this. The problem with this approach is that there is no *simple* comparison, which was the issue here. The advantage of it certainly is that you can have bases (with easily readable and writeable digits) greater than 36 without too much additional effort. The disadvantages are, in addition to the one on top, that this approach requires more memory, and you are also limited by ECMAScript integer limits in two ways: one, unless you are using a BigArray implementation (which again requires even more memory and runtime) the number of digits is limited to the maximum Array length (currently, 2³²−1; you can still use properties with numeric names, but .length does not change, which makes comparison harder); two, bases cannot be greater than the ECMAScript integer *precision* limit (currently, 2⁵³−1). -- PointedEars FAQ: <http://PointedEars.de/faq> | SVN: <http://PointedEars.de/wsvn/> Twitter: @PointedEars2 | ES Matrix: <http://PointedEars.de/es-matrix> Please do not cc me. / Bitte keine Kopien per E-Mail
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Best search algorithm to find a condition within a range. jonas.thornvall@gmail.com - 2015-04-07 02:43 -0700
Re: Best search algorithm to find a condition within a range. "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2015-04-07 13:07 +0200
Re: Best search algorithm to find a condition within a range. jonas.thornvall@gmail.com - 2015-04-07 04:38 -0700
Re: Best search algorithm to find a condition within a range. jonas.thornvall@gmail.com - 2015-04-07 04:48 -0700
Re: Best search algorithm to find a condition within a range. "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2015-04-07 14:49 +0200
Re: Best search algorithm to find a condition within a range. Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-04-07 13:27 +0100
Re: Best search algorithm to find a condition within a range. jonas.thornvall@gmail.com - 2015-04-07 06:04 -0700
Re: Best search algorithm to find a condition within a range. Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-04-07 14:23 +0100
Re: Best search algorithm to find a condition within a range. jonas.thornvall@gmail.com - 2015-04-07 06:54 -0700
Re: Best search algorithm to find a condition within a range. Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-04-07 16:31 +0100
Re: Best search algorithm to find a condition within a range. jonas.thornvall@gmail.com - 2015-04-07 08:59 -0700
Re: Best search algorithm to find a condition within a range. Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-04-07 19:58 +0100
Re: Best search algorithm to find a condition within a range. Dr J R Stockton <reply1500@merlyn.demon.co.uk.invalid> - 2015-04-09 23:08 +0100
Re: Best search algorithm to find a condition within a range. Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-04-10 00:02 +0100
Re: Best search algorithm to find a condition within a range. Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-04-07 18:37 +0200
Re: Best search algorithm to find a condition within a range. jonas.thornvall@gmail.com - 2015-04-07 09:55 -0700
Re: Best search algorithm to find a condition within a range. "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2015-04-07 20:30 +0200
Re: Best search algorithm to find a condition within a range. Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-04-07 20:58 +0200
Re: Best search algorithm to find a condition within a range. "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2015-04-07 22:19 +0200
Re: Best search algorithm to find a condition within a range. jonas.thornvall@gmail.com - 2015-04-08 00:14 -0700
Re: Best search algorithm to find a condition within a range. "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2015-04-08 10:55 +0200
Re: Best search algorithm to find a condition within a range. Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-04-09 13:03 +0200
Re: Best search algorithm to find a condition within a range. "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2015-04-09 14:11 +0200
Re: Best search algorithm to find a condition within a range. "Christoph M. Becker" <cmbecker69@arcor.de> - 2015-04-09 14:55 +0200
Re: Best search algorithm to find a condition within a range. "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2015-04-09 15:20 +0200
Re: Best search algorithm to find a condition within a range. Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-04-09 14:49 +0100
Re: Best search algorithm to find a condition within a range. Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-04-09 16:10 +0200
Re: Best search algorithm to find a condition within a range. "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2015-04-09 16:17 +0200
Re: Best search algorithm to find a condition within a range. jonas.thornvall@gmail.com - 2015-04-09 07:22 -0700
Re: Best search algorithm to find a condition within a range. "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2015-04-09 16:44 +0200
Re: Best search algorithm to find a condition within a range. jonas.thornvall@gmail.com - 2015-04-09 07:57 -0700
Re: Best search algorithm to find a condition within a range. jonas.thornvall@gmail.com - 2015-04-09 08:05 -0700
Re: Best search algorithm to find a condition within a range. Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-04-09 17:04 +0100
Re: Best search algorithm to find a condition within a range. Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-04-09 16:14 +0200
Re: Best search algorithm to find a condition within a range. "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2015-04-09 16:34 +0200
Re: Best search algorithm to find a condition within a range. Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-04-09 17:39 +0200
Re: Best search algorithm to find a condition within a range. "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2015-04-09 18:04 +0200
Re: Best search algorithm to find a condition within a range. Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-04-09 18:26 +0200
Re: Best search algorithm to find a condition within a range. "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2015-04-09 22:13 +0200
Re: Best search algorithm to find a condition within a range. jonas.thornvall@gmail.com - 2015-04-07 10:00 -0700
Re: Best search algorithm to find a condition within a range. jonas.thornvall@gmail.com - 2015-04-07 06:16 -0700
Re: Best search algorithm to find a condition within a range. "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2015-04-07 15:28 +0200
Re: Best search algorithm to find a condition within a range. jonas.thornvall@gmail.com - 2015-04-07 06:58 -0700
Re: Best search algorithm to find a condition within a range. "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2015-04-07 20:25 +0200
Re: Best search algorithm to find a condition within a range. Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-04-07 14:33 +0100
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