From: Daniel N <has.sox@...>
Date: 2006-06-06T21:53:31+09:00
Subject: Re: mode

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Hi Micheal,

I could not get your example to work properly.  It seemed to return the
count of the highest number in my initial list.

I modified it to

li.inject(Hash.new(0)){|s,v| s[v] += 1; s}.invert.max.last

and it gave me the result I expected.  Is it just me tho?


On 6/6/06, Michael Fellinger <m.fellinger@gmail.com> wrote:
>
> li.inject(Hash.new(0)){|s,v| s[v] += 1; s}.max.last
>
> On Monday 05 June 2006 16:23, Elliot Temple wrote:
> > On Jun 4, 2006, at 11:31 PM, Alder Green wrote:
> > > li.uniq.collect {|i| [li.select {|j| j == i}.size, i]}.sort.last.last
> >
> > cool, thanks, collecting pairs works well.
> >
> > On Jun 4, 2006, at 11:40 PM, Daniel Sheppard wrote:
> > >> -----Original Message-----
> > >> From: Elliot Temple [mailto:curi@curi.us]
> > >>
> > >> I bet there's a more elegant way to write this. Anyone want
> > >> to show me?
> > >>
> > >> def mode(li)
> > >
> > > ...
> > >
> > >> end
> > >
> > > It would probably help if you said what you were trying to achieve
> > > rather than asking people to try and interpret code that you admit
> > > isn't
> > > elegant.
> >
> > Mode means:
> >
> > (Statistics) the value that occurs most frequently in a given set of
> > data.
> >
> > > class Array
> > >   def mode
> > >     count = Hash.new(0)
> > >     each {|x| count[x] += 1 }
> > >     count.sort_by{|k,v|v}.last[0]
> > >   end
> > > end
> >
> > that's a nice way :)
> >
> > -- Elliot Temple
> > http://www.curi.us/blog/
>
> --
> EYE CONTACT
> Q: Why do men find it so difficult to make eye contact?
> A: Breasts don't have eyes.
>
>

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