The ADT Bag is a group of items, much like what you might have with a bag of groceries. Note that the items in the bag are in no particular order and that the bag may contain duplicate items. Specify operations to put an item in the bag, remove the last item put in the bag, remove a random item from the bag, check how many items are in the bag, check to see if the bag is full or empty, and completely empty the bag.
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