Using amortized asymptotic analysis, we will be able to argue that dequeue runs in O(1) on average. The worst-case bound for dequeue does not tell the whole story, however, since it often runs in O(1) time and only occasionally runs in O(n) time. Third Attempt - MediumQueue.elm type Queue a = Queues are different from stacks in how they behave and the operations they support. Operations like enqueue and dequeue are meant for a different data structure called a queue. Second Attempt - AnotherSlowQueue.elm type Queue aįront xs -> dequeue (Back (List.reverse xs))įront xs -> peek (Back (List.reverse xs)) Do enqueue and dequeue work the same as pop and push No. ![]() First Attempt - SlowQueue.elm type Queue a = Without having O(1) time access to the last element in a List, special care must be taken to provide efficient Queue operations in a purely functional language. NOTE: Another reasonable alternative for dequeue would be to also return the dequeued element.
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