Stack
CBSE · Class 12 · Computer Science
Summary of Stack for CBSE Class 12 Computer Science. Key concepts, important points, and chapter overview.
Overview
Stack is a fundamental linear data structure that follows the Last-In-First-Out (LIFO) principle, similar to a pile of plates or books where you can only add or remove items from the top. This chapter explores stack operations, implementation in Python, and important applications in computer science
Key Concepts
A linear data structure where elements
A linear data structure where elements are arranged in a sequence and follow LIFO principle. Elements can only be added or removed from one end called
Last
Last-In-First-Out means the element inserted last will be the first one to be removed from the stack, like removing the top plate from a stack of plat
Insertion operation that adds a new
Insertion operation that adds a new element to the TOP of the stack. In Python, implemented using append() method of lists.
Deletion operation that removes the topmost
Deletion operation that removes the topmost element from the stack. In Python, implemented using pop() method of lists.
Different ways to write arithmetic expressions
Different ways to write arithmetic expressions: Infix (operators between operands like x+y), Prefix (operators before operands like +xy), Postfix (ope
Learning Objectives
- Understand the concept of stack as a linear data structure
- Learn the LIFO (Last-In-First-Out) principle of stack operations
- Master the fundamental stack operations: PUSH and POP
- Implement stack using Python lists with proper functions
- Understand different notations for arithmetic expressions (Infix, Prefix, Postfix)
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What are the important topics in Stack for CBSE Class 12 Computer Science?
Stack covers several key topics that are frequently asked in CBSE Class 12 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Stack — CBSE Class 12 Computer Science?
Start by understanding all key concepts. Practise previous year questions from this chapter. Revise formulas and definitions regularly. Use flashcards for quick revision before the exam.
Sources & Official References
- NCERT Official — ncert.nic.in
- CBSE Academic — cbseacademic.nic.in
- CBSE Official — cbse.gov.in
- National Education Policy 2020 — education.gov.in
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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