7 A double-ended queue is a list that allows the addition...

7 A double-ended queue is a list that allows the addition and removal of items from either end. One end is arbitrarily called the front and the other the rear, but the two ends be- have identically. Specify, design, and implement a class for a double-ended queue. Include operations to check if it is empty and to return the number of items in the list. For each end, include operations for adding and deleting items. Implement the double- ended queue as a doubly linked list. Call your class Deque (pronounced "deck").

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00:02 Hello students, the priority queue interface is a data structure that maintains a collection of elements and each associated with a priority.

00:11 The essential methods supported by the priority queue interface are the add method of x and where in the add method of x where you can see this method adds an element x to the priority queue.

00:32 It adds an element x to the priority queue.

00:48 As the element is inserted based on its priority ensuring that the elements with the higher priority and queue is the first.

00:57 So if two elements have the same priority then the order of the insertion may be considered.

01:04 So the next is the delete of min method.

01:12 So this method removes and returns the element with the highest priority.

01:17 It removes and returns the element with the highest priority.

01:42 As from the priority queue after deleting the minimum element and remaining elements are adjusted to maintain the ordered based on the priority.

01:53 The third is the size method.

01:59 This method returns the number of elements currently present in the queue.

02:04 It returns the number of elements currently present in the queue.

02:27 In the priority queue as implementing these methods using a singly linked list as the running time here it analyzes that the add method singly linked list this is the code for the singly linked list for adding.

02:52 You can see here we are creating a priority queue.

02:56 Then initially we will just initialize our value as the value priority queue all those things and later we will create a method of the class of the priority queue and then we will create a method for the add delete of min as well as for the as well as for the you can say for the size of the method...

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