LeetCode
| File:LeetCode Logo black with text.svg | |
Type of site | Private |
|---|---|
| Founded | 7 August 2015 |
| Headquarters | , |
| Owner | Leetcode LLC |
| Founder | Winston Tang |
| Key people | Hercy Chang (CEO) |
| Industry | Software |
| Revenue | US$8 million[1] (2024) |
| Employees | 264 (2025)[2] |
| URL |
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LeetCode is an online platform for coding interview preparation. The platform provides coding and algorithmic problems intended for users to practice coding.[3] LeetCode has gained popularity among job seekers in the software industry and coding enthusiasts as a resource for technical interviews and coding competitions.[3][4][5][6][7] As of 2025, the website has 26.3 million monthly visitors.[8]
Features
[edit | edit source]LeetCode offers both free and premium access options. While free users have access to a limited number of questions, premium users gain access to additional questions previously used in interviews at large tech companies.[3] 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]
Additionally, LeetCode provides its users with mock interviews and online assessments. LeetCode hosts weekly and biweekly contests, each having 4 problems.[6][10] After participating in a contest for the first time, one gets assigned a ranking, which can be found in their profile.[11] LeetCode also provides its users with daily challenges, following UTC, with a lucky draw at the end of each month for those who stayed consistent for the month.[12]
LeetCode supports a wide range of programming languages, including Java, Python, JavaScript, and C.[13] Since September 2024, LeetCode China supports Huawei's Cangjie programming language for all problems.[14]
The platform features forums where users can engage in discussions related to problems, the interview process, and share their interview experiences.[6]
Types of problems
[edit | edit source]Every question on LeetCode has a particular category or tag. Some of the most common tags include arrays, strings, two pointers, stacks, binary search, sliding windows, linked lists, trees, tries, backtracking, heaps, priority queues, graphs, breadth-first search, depth-first search, dynamic programming, greedy algorithms, bit manipulation, database problems, and math.[15][better source needed] As of April 2025, LeetCode offers 3525 questions across its three levels of difficulty; with 873 questions categorized as easy, 1829 as medium, and 823 as hard.[10][better source needed]
History
[edit | edit source]LeetCode was founded in Silicon Valley in 2015 by Winston Tang.[16][17] After moving to the US from Malaysia in 2005, Tang founded the company, citing his own experiences working at Amazon and Google as inspiration.[17][18]
LeetCode expanded its operations to China in 2018, providing Chinese problems, solutions and forums on its Chinese website Likou (Chinese: 力扣; pinyin: Lìkòu).[19] In 2021, LeetCode secured its first round of funding, receiving a $10 million investment from Lightspeed China Partners.[19]
See also
[edit | edit source]References
[edit | edit source]- ^ LeetCode: Contact Details, Revenue, Funding, Employees and Company Profile Silicon Valley Journal
- ^ LeetCode Employee Directory, Headcount & Staff LeadIQ
- ^ a b c Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
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- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ leetcode.com Traffic analytics, ranking & audience (May 2025) Similarweb
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
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External links
[edit | edit source]- Lua error in Module:Official_website at line 94: attempt to index field 'wikibase' (a nil value).