LeetCode is an online educational programming platform that can help you prepare for a job in computer science in many ways. There are a variety of tutorials and exercises on different coding techniques to improve your skillsets and expand your knowledge. Additionally, the best feature of this site is that there are many coding problems to solve and practice with that directly mirror questions asked during technical coding interviews for all the major tech companies like Amazon, Facebook, Apple, Google, and more.
Just by signing up, you will have access to a lot of different exercises and study plans all for free. Not only will this give you the necessary coding practice to excel at technical interviews, but you can also make your profile public to share your progress and impress recruiters. The site even lets you code each problem in a few different programming languages like Java, Python, C, and more, so pick your favorite or one that you need more practice in and start solving problems.
Tips:
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- As a starting point, you can try completing the daily problem each day, which range from easy to hard programming questions.
- After solving a problem, read through other user’s discussion posts on the problem to see ways you can optimize your solution to be faster and more efficient with space.