queue.rb

# frozen_string_literal: true

# Implements a Queue data structure
class Queue
  def initialize
    @queue = []
  end

  def enqueue(value)
    @queue.push(value)
  end

  def dequeue
    @queue.delete_at(0)
  end

  def display
    print "#{@queue}\n"
  end
end

q = Queue.new

q.enqueue(1)
q.enqueue(2)
q.enqueue(3)
q.enqueue(4)
q.display

q.dequeue
q.dequeue
q.display