From: Li Chen <chen_li3@...>
Date: 2009-07-21T17:39:57+09:00
Subject: create a variable number of loop

Hi all,

I want to create a variable number of loop based on the input:
if the input is 1, I will create a loop ( I call it 1-loop);
if the input is 2 , I will create a nested loop( 2-loop);
if the input is 3, I will create a loop of loop of loop (3-loop);
if the input is 4,  I will create a 4-loop, so on and so on.
How I can do that?

Thanks,

Li

array=%W{A B C D}

#input  is 1

array.each do |e1|
   puts e1
end


#input is 2
array.each do |e1|
   array.each do |e|2
       puts e1+e2
   end
end

#input is 4
array.each do |e1|
   array.each do |e2|
      array.each do |e3|
      array.each do |e4|
              puts e1+e2+e3+e4
      end
     end
   end
end
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