LeetCode is an online platform that provides a wide range of coding and algorithmic problems aimed at helping software developers prepare for technical interviews. Founded in 2015 and headquartered in San Diego, California, LeetCode has become a go-to resource for job seekers in the software industry, with over 26.3 million monthly visitors as of 2025.

• Extensive Problem Set: LeetCode offers over 2,350 coding problems categorized by difficulty (Easy, Medium, Hard) and topic (e.g., arrays, strings, trees, dynamic programming). This structured approach allows users to focus on specific areas of interest or weakness.
• Interview Preparation: The platform simulates the technical interview environment, providing problems that are commonly asked by major tech companies like Google, Amazon, and Microsoft. This makes it an invaluable tool for candidates preparing for coding interviews.
• Mock Interviews and Contests: LeetCode hosts regular coding contests and offers mock interview features, allowing users to practice under timed conditions and receive feedback on their performance.
• Community and Resources: Users can engage with a large community of fellow coders, share solutions, and discuss interview experiences. LeetCode also provides detailed solutions and discussions for many problems, enhancing the learning experience.

LeetCode offers both free and premium subscription options. Free users have access to a limited number of problems, while premium users can access additional questions, including those used in actual interviews at large tech companies. The premium subscription is priced at approximately $35 per month.

LeetCode is widely regarded as one of the best platforms for coding practice and interview preparation. Its extensive problem set, structured learning paths, and community support make it a valuable resource for both beginners and experienced developers looking to sharpen their skills and improve their chances of landing a job in the tech industry. Whether you are preparing for interviews or simply looking to enhance your coding abilities, LeetCode provides the tools and resources necessary for success.