What is a priority queue?
Waiting queue may not operate on a strictly first in first out basis, but on some complex priority scheme based on such factors as what compiler is being used, the execution time required, number of print lines, etc. The resulting queue is called a priority queue.
Give the example of applications in which stacks are used?
The first application majorly deals with the recursion, the second application is a classical and the last one is known as stack machines which chiefly deals with insertion and deletion from the stack.