public int?Queue_PositivTestForeach(int[] array)
        {
            int result = 0;

            Task1.Queue <int> queue = new Task1.Queue <int>(array);
            foreach (var item in queue)
            {
                result += item;
            }
            return(result);
        }
 public int?Queue_PositivTestLast(int[] array)
 {
     Task1.Queue <int> queue = new Task1.Queue <int>(array);
     return(queue.Dequeue());
 }
 public int?Queue_PositivTestSize(int[] array)
 {
     Task1.Queue <int> queue = new Task1.Queue <int>(array);
     return(queue.Count);
 }