From: Rie! <ariekusumaatmaja2@...>
Date: 2008-01-31T05:38:48+09:00
Subject: Re: counting the number of repititions in an array

On 31/01/2008, Adam Akhtar <adamtemporary@gmail.com> wrote:

> Hi if i want to count the number of times values are repeated in an
> array how do i go about it...is there a method?
>
> My solution is
>
> list.sort
> loop through list and compare one element to the next and count
> repetitions.
>
> is there a simpler way?

do you mean this?

>> [3,9,7,1].inject { |i,j| i + j }
=> 20

> Also
>
> in C i used the for loop a lot to loop through arrays but i notice that
> in ruby using
> list.each do |element|
> ..
> ..
> end
>
> is quite popular.
>
>  If i wanted to do someting like this:
>
> if list[currElement] == list[currElement + 1]
> ...
>
> How would i go about writing that using list.each do |element|?
>
> Any help greatly appreciated.
> --
> Posted via http://www.ruby-forum.com/.
>
>


-- 
r9 = { name: Rie!, ym: riyari3, skype: rubyninja,
li: http://linkedin.com/in/ariekeren,
fb: http://profile.to/ariekeren,
blog: http://tinyurl.com/2bjgvn }