[1] The performance of users' solutions is evaluated based on execution speed and memory usage, and is ranked against other submissions in the LeetCode database.

[9] LeetCode supports a wide range of programming languages, including Java, Python, JavaScript, and C.[10] The platform features forums where users can engage in discussions related to problems, the interview process, and share their interview experiences.

[7][better source needed] LeetCode was founded in Silicon Valley in 2015 by Winston Tang.

[12][13] After moving to the US from Malaysia in 2005, Tang founded the company, citing his own experiences working at Amazon and Google as inspiration.

[15] In 2021, LeetCode secured its first round of funding, receiving a $10 million investment from Lightspeed China Partners.