Solutions for DSA and SQL Problems on LeetCode

This repository contains my solutions for various Data Structures and Algorithms (DSA) and SQL problems on LeetCode, implemented in Java. LeetCode is a popular online platform that offers a collection of coding challenges to help improve programming skills and prepare for technical interviews.

Table of Contents

• Introduction
• Usage
• Project Structure
• Contributing
• License

Introduction

This repository serves as a centralized location for my Java solutions to DSA and SQL problems on LeetCode. Each problem is categorized based on the topic it covers, making it easier to navigate and find specific solutions. The solutions are implemented using Java, following standard coding conventions and best practices.

Usage

To use this repository, follow these steps:

1. Clone the repository to your local machine:

   git clone https://github.com/your-username/leetcode-solutions.git
   

2. Navigate to the cloned repository:

   cd leetcode-solutions
   

3. Browse through the directory structure to find the problem you are interested in. The problems are organized into different folders based on their respective topics.

4. Open the solution file in your preferred code editor. Each solution file contains the Java code for solving the problem.

5. Study the solution code, including the algorithm and any necessary explanations or comments. Understand the approach used and how the problem is solved.

6. Modify the code or optimize it as desired. Test the solution against the provided test cases, or create your own test cases to validate its correctness.

7. Repeat the above steps for other problems in the repository as needed.

Project Structure

The repository's structure is organized as follows:

|-- Arrays
    |-- TwoSum.java
    |-- ...
|-- Linked Lists
    |-- ReverseLinkedList.java
    |-- ...
|-- ...
|-- SQL
    |-- CombineTwoTables.sql
    |-- ...

• Arrays: This directory contains Java solutions for array-related problems on LeetCode.

• Linked Lists: This directory contains Java solutions for linked list-related problems on LeetCode.

• ...: There may be other directories for different problem categories, such as Trees, Strings, Dynamic Programming, etc.

• SQL: This directory contains SQL solutions for problems that involve database queries and operations.

Feel free to explore the repository, study the solutions, and compare them with your own solutions to learn and improve your problem-solving skills.

Contributing

Contributions to this repository are welcome. If you have alternative or optimized solutions for any of the problems, you can submit a pull request. Please ensure that your code follows the established coding conventions and includes appropriate comments and documentation.

License

This repository is licensed under the MIT License. You are free to use the code provided here for personal or educational purposes. However, make sure to review the license file for more details and legal limitations.