HW impossibility?: “Create a rock paper scissors program in ruby WITHOUT using conditionals”

Question

I\'m in an introductory software development class, and my homework is to create a rock paper scissors program that takes two arguments (rock, paper), etc, and returns the arg t

Answer 1

A simple hash to the rescue:

def tell_me(a1, a2)
  input = [a1 , a2].sort.join('_').to_sym
  rules = { :paper_rock => "paper", :rock_scissor => "rock", :paper_scissor => "scissor"}
  rules[input]
end