Answers
`Hey,
Note: Brother if you have any queries related the answer please do comment. I would be very happy to resolve all your queries.
Queue is a list where insertion is done at one end and removal is done at the other end.
Dequeue is a list where every end supports insertion and removal.
With this feature, it is possible to use the dequeue as a list and a stack at the same time as required by the application.
Priority queue does not have any ends.
In a priority queue, elements can be inserted in any order but removal of the elements is in a sorted order.
Due to this behavior, a priority queue can be used to sort the elements.
Since sorting is done only when the elements are removed from the priority queue, the PQ is easily implemented by a heap.
Using an array-based heap, elements can be inserted and deleted in O(logN).
java.util package provides implementations for all of the above.
Kindly revert for any queries
Thanks.
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