From: "Dan Stevens (IAmAI)" <dan.stevens.iamai@...>
Date: 2006-12-31T00:32:25+09:00
Subject: Re: Randomizing an Array?

I found a library called 'rand.rb':
http://raa.ruby-lang.org/project/rand/. It allows you to select an
element at random from an array and 'scramble' (randomize the order)
of them as well.

Description:

Helper methods for Enumerable, Array, Hash, and String
that let you pick a random item or shuffle the order of items.

Examples with Array:

[1,2,3,4].pick
# => 2 (pick random element)

[1,2,3,4].shuffle
# => [2, 4, 1, 3] (return random-sorted version)

a = [1,2,3,4]
a.pick!
# => 3
a
# => [1,2,4] (remove the picked element)

On 29/12/06, Daniel Waite <rabbitblue@gmail.com> wrote:
> Sorry, I guess a use-case would be helpful.
>
> Call #randomize or #randomize! on any array to mix up its elements.
>
> [ 5, 10, 15, 20, 25 ].randomize # [25, 15, 5, 20, 10]
>
>
> --
> Posted via http://www.ruby-forum.com/.
>
>