Stack Implementation Using Array in Java | Push, Pop, Peek Explained | upGrad Learning
Learn Stack Implementation Using Array in Java with complete explanation of Push, Pop, Peek, and isEmpty operations in this beginner-friendly Data Structures and Algorithms (DSA) tutorial. In this video, we explain how the Stack Data Structure works using arrays, how the LIFO (Last In First Out) principle works, and how to implement stack operations step-by-step in Java.
This Stack Using Array in Java tutorial covers stack implementation, stack operations, push operation, pop operation, peek operation, stack overflow, stack underflow, top pointer, array implementation of stack, and complete DSA concepts for beginners. Perfect for students preparing for coding interviews, Java programming, college exams, and DSA placements.
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Following are the concepts covered in this video :
00:00 – Introduction to Stack Implementation Using Array
00:37 – Variables Required in Stack (Top, Capacity, Size)
01:27 – Understanding the Top Pointer
02:05 – Push Operation Logic Explained
02:55 – Pop Operation Logic Explained
03:39 – Creating the Stack Class
04:27 – Constructor & Array Initialization
05:08 – Implementing Push Operation
06:42 – Stack Overflow Condition
08:12 – Implementing Pop Operation
08:53 – Stack Underflow Condition
10:58 – Implementing Peek Operation
12:31 – Implementing is
Empty Operation
13:19 – Creating Stack Object & Capacity
14:06 – Pushing Elements into Stack
14:55 – Running Push Operation Output
15:42 – Pop & Peek Output Demonstration
16:41 – Checking if Stack is Empty
17:36 – Stack Underflow Example
18:17 – Visual Explanation of Stack Using Array
19:49 – Conclusion & Linked List Implementation Preview
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