lisp.rb

require 'pry'

class Test
  attr_reader :list

  def initialize
    @list = []
  end

  def mult(n, m)
    if m.zero?
      puts "The answer is #{list.sum}"
      list.sum
      return
    end
    list << n
    mult(n, m - 1)
  end
  # + n (x n (subl m)

  def add(n, m)
    if n.zero? || m.zero?
      puts "The answer is #{list.size + n}"
      list.size + n
      return
    end
    list << n
    add(n, m - 1)
  end
  # add1 (+ n (subl m))))
end