Stacks Data Structure for GATE CS and IT Preparation

Mastering data structures is the cornerstone of succeeding in competitive computer science exams and technical interviews. Understanding how stacks operate under the hood is essential for solving complex algorithmic challenges efficiently. This text-based course guides you through the foundational theory, operations, and practical implementations of the stack data structure. You will transition from basic concepts to analyzing complex stack-based algorithms through clear written explanations and code examples. What you'll learn: Understand foundational stack concepts, including Last-In-First-Out (LIFO) behavior and core terminology; Implement stacks from scratch using both static arrays and dynamic linked lists; Analyze the time and space complexity of push, pop, peek, and search operations; Apply stack data structures to solve classic exam problems such as parenthesis matching and expression evaluation; Explore modern applications of stacks, including the call stack in runtime environments and monotonic stack patterns. The course begins with essential definitions and theoretical properties before moving into step-by-step code implementations and analysis of typical exam questions. It is designed for computer science students, IT professionals, and candidates preparing for competitive exams who want to solidify their data structure fundamentals without any complex prerequisites. Start reading today to master this fundamental data structure and boost your exam readiness.