Liz and Libby's Queue

gistfile1.txt

class Queue
  def initialize
    @store = []
  end

  def push(x)
    @store.unshift(x)
  end

  def pop
    raise "Stack Underflow - The stack is empty" if self.empty?
    @store.pop
  end

  def peek
    @store.last
  end

  def empty?
    @store.empty?
  end

  def queue_print
    p @store
  end

end

our_queue = Queue.new

our_queue.push("Apple")
our_queue.push("Pear")
our_queue.push("Banana")
our_queue.push("Passion Fruit")

our_queue.queue_print

puts "First Element Off: #{our_queue.pop}"
puts "Second Element Off: #{our_queue.pop}"
puts "Third Element Off: #{our_queue.pop}"

our_queue.queue_print

our_queue.pop

puts "Is this empty #{our_queue.empty?}"