From: daz <dooby@...10.karoo.co.uk>
Date: 2005-08-07T19:21:07+09:00
Subject: Re: cartesian product


walter a kehowski wrote:
>
>
> Here's what I have so far:
> [code]
>
> and this does print all the elements of c.
> Great. Now how do I do a class?
> Can I create a new method for Array?
>


class Array
  def cartprod(b)
    c=[]
    each do |ae|
      b.each do |be|
        c << [ae, be]
      end
    end
    c
  end
end

a=[1,2,3]
b=[4,5,6]

c = a.cartprod(b)

c.each { |ce| p ce }


daz