Coding and Algorithm Practice Platforms
LeetCode (iOS/Android)
One of the most popular platforms for practicing coding problems, especially for interview prep. It includes problems on algorithms, data structures, databases, and system design. LeetCode has a vibrant community and offers solutions and discussions for almost every problem.
HackerRank (iOS/Android)
Offers a wide range of challenges across multiple domains like algorithms, data structures, artificial intelligence, databases, and more. It is highly recommended for practicing coding interviews and getting hands-on with coding problems.
CodeSignal (iOS/Android)
Similar to HackerRank, CodeSignal offers a variety of coding challenges. It’s especially known for providing coding challenges used by tech companies for hiring.
Exercism (iOS/Android)
Exercism provides coding exercises and tracks for multiple programming languages. It focuses on real-world coding challenges and offers mentorship through its community.
TopCoder (iOS/Android)
An established platform with competitive programming challenges, used by many tech giants for hiring. It’s great for practicing algorithmic thinking and coding under time constraints.
Codewars (iOS/Android)
Codewars offers coding challenges (called katas) that range from beginner to expert level. You can solve problems in a variety of languages like Python, JavaScript, Java, Ruby, etc., and learn through community solutions.
CodinGame (Web-based)
CodinGame allows you to solve coding challenges in the form of fun games. It’s a unique platform where you can code your way through game mechanics, making it a more interactive and fun way to practice algorithms.
Brilliant (iOS/Android)
Brilliant focuses on learning through problem-solving. It offers interactive lessons and quizzes in mathematics, logic, algorithms, and data science, providing a solid foundation for technical problem-solving skills.
EdX (iOS/Android)
Although EdX is primarily a platform for full courses, it offers great coding-related content, including interactive courses on algorithms, system design, and other technical skills. Many courses are taught by top universities and tech companies.
For Data Science/Programming Roles (Python, Machine Learning, etc.):
- SoloLearn (iOS/Android): Learn programming languages like Python, Java, and SQL with interactive lessons and quizzes.
- LeetCode (iOS/Android): Great for practicing coding problems, algorithmic challenges, and preparing for technical interviews in data science and software engineering.
- HackerRank (iOS/Android): Offers coding challenges and competitions. You can practice data structures, algorithms, and also specific tracks for machine learning and SQL.
- Exercism (iOS/Android): Practice coding exercises across multiple programming languages. Includes mentorship from other users for feedback.
- DataCamp (iOS/Android): Provides hands-on coding exercises for data science and machine learning using Python, R, SQL, and more. Great for brushing up on data science-specific skills.
- Mimo (iOS/Android): Offers small coding exercises in languages like Python, JavaScript, and SQL, perfect for quick practice.