Lecture 25 | Stack Implementation Using Collections | DSA Practice

Welcome to Lecture 25 – Stack Using Collections

In this lecture, we explore how to implement a Stack using Java Collections Framework, focusing on built-in classes and efficient usage. We understand how stacks can be implemented using classes like Stack and Deque, and compare them with manual implementations.

💡 Topics Covered:
-What is a Stack (LIFO Principle)
-Stack using Java Collections (Stack Class)
-Stack using Deque (ArrayDeque)
-Push, Pop, Peek Operations
-isEmpty & Size Methods
-Comparison with Array & Linked List Implementation
-Best Practices & Use Cases
-Time & Space Complexity
-Java Implementation

🎯 By the end of this lecture, you will be able to use Java Collections effectively to implement stacks in real-world applications.

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