a2ikm/array_rstrip.rb

## array_rstrip.rb
class Array
  def rstrip
    index =
      if block_given?
        rindex { |item| !yield(item) }
      else
        rindex { |item| !item.nil? }
      end

    if index
      take(index)
    else
      dup
    end
  end
end
	class Array
	def rstrip
	index =
	if block_given?
	rindex { \|item\| !yield(item) }
	else
	rindex { \|item\| !item.nil? }
	end

	if index
	take(index)
	else
	dup
	end
	end
	end