Queue_and_Stack_with_Explanations (1).pptx

Stack: Introduction, Representation, Operations, Applications of Stack

1. Queue and Stack By SIVAKUMAR R

2. Queue - Introduction • Follows FIFO (First In First Out). • Insert at rear (Enqueue), remove from front (Dequeue). Explanation: Think of a line at a ticket counter; first person to enter is first to leave. Queue Representation

3. Queue - Representation • Array representation. • Linked list implementation. Explanation: Arrays are simple but have fixed size; Linked lists are dynamic.

4. Queue - Operations • Enqueue, Dequeue, Peek, isEmpty, isFull. Explanation: Operations help manage elements efficiently.

5. Types of Queue • Simple Queue • Circular Queue • Priority Queue • Deque Explanation: Different types provide flexibility for various use cases.

6. Applications of Queue • CPU scheduling • Disk scheduling • Data buffering • Request handling Explanation: Queues are used wherever order of processing matters.

7. Stack - Introduction • Follows LIFO (Last In First Out). • Insert and remove from the same end (Top). Explanation: Think of a stack of plates; last placed is first removed. Element 3 Element 2 Element 1

8. Stack - Representation • Array representation. • Linked list implementation. Explanation: Similar to queues, arrays are fixed while linked lists are flexible.

9. Stack - Operations • Push, Pop, Peek, isEmpty, isFull. Explanation: Stack operations ensure controlled access to elements.

10. Applications of Stack • Function calls • Expression evaluation • Parsing • Undo/Redo • Backtracking Explanation: Stacks are vital in programming and problem solving.