Stack: Stack is an abstract data type where the access of a data is made at only one end. In the stack, the data can be inserted or removed at the same end. The first item inserted moves to the last when inserting other new items. So, the first item inserted was retrieved last. This mechanism is referred to as last-in-first-out (LIFO). Insertion and deletion are the common operations of the stack. Inserting an item into the stack is called push. Removing an item from the stack is called pop. Priority Queue: If the items in the queue are related with a priority, then it is called priority queue. When inserting an item into the priority queue, the item is added with the priority. When removing an item from the priority queue, the item with higher priority is first removed. Then based on priority, the other items are removed. That is, either the maximum number or the minimum number can be deleted by using deletemaximum() or deleteminimum() function. Deletemaximum() is a function which deletes the number which is having a higher priority.

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Chapter 14, Problem 1TQ

Program Plan Intro

Stack:

Stack is an abstract data type where the access of a data is made at only one end.

In the stack, the data can be inserted or removed at the same end.

The first item inserted moves to the last when inserting other new items. So, the first item inserted was retrieved last. This mechanism is referred to as last-in-first-out (LIFO).

Insertion and deletion are the common operations of the stack.

Inserting an item into the stack is called push.

Removing an item from the stack is called pop.

Priority Queue:

If the items in the queue are related with a priority, then it is called priority queue.

When inserting an item into the priority queue, the item is added with the priority.

When removing an item from the priority queue, the item with higher priority is first removed. Then based on priority, the other items are removed.

That is, either the maximum number or the minimum number can be deleted by using deletemaximum() or deleteminimum() function.

Deletemaximum() is a function which deletes the number which is having a higher priority.

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