closdlgdo/dsa-

This is an overview of some Data Structure and Algorithm problems

Algorithms Explained

LinkedListExample The LinkedListExample class demonstrates the usage and benefits of a linked list data structure compared to an array list. The code creates a linked list and an array list, adds elements to them, retrieves elements by index, and inserts elements at a specific position in the list. The performance of these operations is measured and compared between the two data structures.

Usage

To run the LinkedListExample code, simply compile and run the LinkedListExample.java file.

Copy code javac LinkedListExample.java java LinkedListExample Time Complexity

The time complexity of accessing an element in a LinkedList by index is O(n), where n is the index of the element. This is because a LinkedList does not use an array as its underlying data structure, and instead, to access an element at a particular index, the list must be traversed from the beginning until the desired element is found. Therefore, the time it takes to access an element in a LinkedList grows linearly with the index of the element.

The time complexity of inserting or removing an element at a specific index in a LinkedList is O(1), which means that it takes a constant amount of time regardless of the size of the list. This is because the LinkedList only needs to update a few references to add or remove an element at a specific index, and it does not need to shift any other elements as it does in an ArrayList.

Prerequisites

Java Development Kit (JDK) version 8 or higher

Installation

Clone the repository: git clone https://github.com/yourusername/yourproject.git Navigate to the project directory: cd yourproject Compile the Java code: javac LinkedListExample.java Run the program: java LinkedListExample

Usage

The LinkedListExample program demonstrates the differences between using a LinkedList and an ArrayList in Java. When run, the program creates both a LinkedList and an ArrayList and adds elements to each data structure. The program then measures the time it takes to retrieve an element and the time it takes to add an element for each data structure. Finally, the program outputs the results to the console.

To use the program, simply run it using the steps outlined in the Installation section.

Contributing

If you would like to contribute to this project, please follow these steps:

Fork the repository Create a new branch for your feature: git checkout -b feature-name Make your changes and commit them: git commit -m 'Add new feature' Push your changes to your forked repository: git push origin feature-name Open a pull request on the original repository and describe your changes.