HackerRank - StackQueue.rb

class Solution
  # Write your code here
  def initialize
    @stack = Array.new
    @queue = Array.new
  end
  
  def pushCharacter(c)
    @stack.push(c)
  end
  
  def enqueueCharacter(c)
    @queue.unshift(c)
  end
  
  def popCharacter
    @stack.pop
  end
  
  def dequeueCharacter
    @queue.pop
  end
  
end