Data-structures and Algorithms using Python: Programming Series 101–2

  1. enqueue(): add elements to the queue.
  2. dequeue(): remove the elements from the queue.
  3. size(): get the number of elements in the queue.
  4. is_empty(): check if the queue is empty or not.
  5. front(): peek through the first element of the queue.
  6. back():peek through the last element of the queue.



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