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Groups > comp.lang.ruby > #4548

Re: search nearest to elements in array (hash)

From Martin DeMello <martindemello@gmail.com>
Newsgroups comp.lang.ruby
Subject Re: search nearest to elements in array (hash)
Date 2011-05-14 16:30 -0500
Organization Service de news de lacave.net
Message-ID <BANLkTimFVmVWYomG_jM6JKAfStLZ2Eomcg@mail.gmail.com> (permalink)
References <86667b5fe1841c16852cd7c86dc82656@ruby-forum.com>

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On Sun, May 15, 2011 at 2:35 AM, Mateus .. <excanoe@gmail.com> wrote:
> Hi!
>
> I'm interesting, what is the best way to find nearest element in array
> in comparison with "needle"?

Depends - if there's a comparison function, and your array is sorted
on it, then just do a binary search. If not, there's nothing better
than a linear search, calculating the distance between each element
and the needle.

martin

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Thread

search nearest to elements in array (hash) "Mateus .." <excanoe@gmail.com> - 2011-05-14 16:05 -0500
  Re: search nearest to elements in array (hash) serialhex <serialhex@gmail.com> - 2011-05-14 16:21 -0500
  Re: search nearest to elements in array (hash) 7stud -- <bbxx789_05ss@yahoo.com> - 2011-05-14 16:28 -0500
    Re: search nearest to elements in array (hash) Martin DeMello <martindemello@gmail.com> - 2011-05-14 16:33 -0500
    Re: search nearest to elements in array (hash) 7stud -- <bbxx789_05ss@yahoo.com> - 2011-05-14 16:36 -0500
  Re: search nearest to elements in array (hash) Martin DeMello <martindemello@gmail.com> - 2011-05-14 16:30 -0500
  Re: search nearest to elements in array (hash) "Mateus .." <excanoe@gmail.com> - 2011-05-15 01:33 -0500

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