1. Introduction to Stack in Java Definition: A stack is a linear data structure that follows the Last In First Out (LIFO) principle. Operations: Push: Adds an element to the top of the stack. Pop: Removes and returns the top element of the stack. Peek: Returns the top element without removing it. isEmpty: Checks if the stack is empty. size: Returns the number of elements in the stack. 2. Implementing a Stack in Java Using java.util.Stack: ...
Linked lists are a fundamental data structure that every software developer should understand. They form the basis for many other data structures and algorithms. In this blog post, we’ll explore how to implement a linked list in Java and cover some of the trickiest parts that you might encounter during interviews. What is a Linked List? A linked list is a linear data structure where each element, called a node, contains a reference (or link) to the next node in the sequence. Unlike arrays, linked lists do not require contiguous memory allocation, making them more flexible for dynamic data structures. ...