Are you a data analyst looking to improve your coding skills so you can nail your next interview? If so, you’re in luck! There are lots of great free resources out there that will help you practice. In this blog post, we’ll share four of my favorites. Happy coding!
#1 – HackerRank
HackerRank is a website that provides a platform for aspiring data analysts to practice their coding skills. The website offers a range of challenges and puzzles that test participants’ analytical and problem-solving abilities. These challenges are designed to mimic real-world scenarios that Data Analysts are likely to encounter in their work. By completing these challenges, participants can hone their skills and prepare for the rigors of the Data Analyst role. In addition, the website provides a leaderboard where users can compare their scores with others. This encourages users to keep pushing themselves to improve their performance. Overall, HackerRank is an excellent resource for aspiring Data Analysts who want to sharpen their coding skills.
Relevant Practice Topics Included: Python, SQL, Artificial Intelligence
#2 – Exercism
Exercism is a website that provides practice exercises for a variety of programming languages. Aspiring data analysts can use Exercism to hone their coding skills by working through exercises at their own pace and receiving feedback from other users. Exercism also offers a range of resources, such as code snippets and cheatsheets, to help users learn new programming concepts. Importantly, Exercism is free to use, making it an accessible resource for anyone who wants to improve their coding skills. Overall, Exercism is a valuable website for aspiring data analysts who want to practice their coding skills and expand their knowledge of programming languages.
Relevant Practice Topics Included: Python, R, PL/SQL
#3 – Codewars
For aspiring data analysts, Codewars is an invaluable website for honing coding skills. The site features a variety of challenges, or “kata,” of varying difficulty levels. As users complete kata, they earn points and move up in rank. The challenges are submitted by the Codewars community, so they are always fresh and interesting. In addition, users can submit their own kata for others to solve. This makes Codewars a great way to learn from and interact with other coders from all over the world. Whether you’re just starting out or you’re a seasoned veteran, Codewars is a great resource for anyone looking to improve their coding skills.
Relevant Practice Topics Included: Python, R, SQL, Reasoning
#4 – Leetcode
Leetcode is a website that offers a wide range of coding challenges, making it an invaluable resource for aspiring data analysts. The site contains a variety of different problem types, ranging from simple algorithms to complex data structures. In addition, Leetcode also offers detailed explanations of solutions, allowing users to deepen their understanding of the concepts involved. Perhaps most importantly, Leetcode provides a supportive community of users who are always willing to offer advice and assistance. For these reasons, Leetcode is an essential tool for anyone hoping to develop their coding skills.
Relevant Practice Topics Included: SQL, Data Structures,
You can find many more similar sites these are the best four that I could dig up. Many others focus on algorithms or are geared towards software developers, but if you’re looking for some good content without paying anything then this is what will work!