- LeetCode
- Exercism (CLI in Go) (Issues)
- Project Euler (HN)
- Advent of Code (Lobsters Promo Thread 2020)
- HackerRank
- HackerEarth
- Codeforces
- Atcoder
- Codechef
- Kattis
- AlgoDaily - Software interview prep made easy. Coding Interview Questions.
- Sphere Online Judge
- Build your own X
- CodeAbbey
- Code Golf (Code)
- Coding Problems - Solutions for various coding/algorithmic problems and many useful resources for learning algorithms and data structures.
- Synacor Challenge
- Online Judge (Code)
- Edabit - Interactive coding challenges.
- DMOJ - Modern Online Judge. (Code)
- CodeCrafters - Build your own X. Master any language. (Twitter) (HN)
- LeetCode solutions in Rust/Python
- Leetcode Patterns - Curated list of Leetcode questions grouped by their common patterns. (Code)
- LeetCode frequently asked questions
- Rust
- Go - Collection of 100+ popular LeetCode problems that I've solved in Go.
- Go 2
- Go 3
- Go 4
- Python / Modern C++ - Many solutions.
- Python
- Python 2
- Python & Java
- C
- C++
- C++ 2
- Swift
- Swift 2
- Swift 3
- TypeScript
- JS
- Solve LeetCode problems in VS Code
- LeetCode Solutions Explained (Code)
- Algos & Data Structures for Leetcode
- ChatGPT vs Project Euler
- Rust
- Fast Project Euler Solutions in Rust
- Polyglot Euler - Solutions in different programming languages.
- Python
- Python
- Python
- Haskell
- Haskell 2
- Python, Haskell
- Java, Python, Mathematica, Haskell
- Numerical answers to all 700+ Project Euler problems
- 2022 solutions in OCaml
- AOC Rust 2021
- AOC in C by antirez
- Rust
- Rust 2
- Rust 3
- Rust 4 - Many years.
- Rust 2020
- Rust 2020/21
- JS
- OCaml
- Haskell
- Haskell 2
- Haskell 3
- Haskell 4
- Haskell 5
- Swift
- Go
- Go 2
- Go 3
- Python
- Python 2
- ReasonML
- Idris/Haskell
- Zsh
- Julia
- Awesome Advent of Code
- aoc - CLI for reading, running and submitting Advent of Code challenges.
- Peter Norvig's Pytudes: Advent of Code 2020 (HN)
- Advent of Code walkthroughs by Marco Bonelli
- Advent Of Code Zig TemplaHaskell Advent of Code 2021te
- Advent of Code 2021 OCaml
- Haskell Advent of Code 2021
- Haskell Advent of Code 2021 2
- Swift Advent of Code 2021
- Advent of Code 2021 in Coq
- AOC in Scala
- Cracking the Coding Interview with Rust
- 30 Days of Code - Solutions for 30 Days of Code by HackerRank in C++, C#, F#, Go, Java, Kotlin, Python, Ruby, Swift & TypeScript.
- Rust Gym - Leetcode Solutions in Rust, Advent of Code Solutions in Rust and more.
- Solving Advent of Code 2020 in under a second (2021)
- 5 years of leetcode with no progress. I'm giving up (2021)
- Google Interview Questions Articles
- Решаем LeetCode на сложности Hard (2021)
- Задачи с интервью — LeetCode, HackerRank — feat. 2pizza (2021)
- Ask HN: Did preparing for LeetCode type of interviews improve your skills? (2021)
- Leetcode company problems
- practice.dev - Practice programming. (Code)
- Ace your leetcode preparations (2021)
- Advent of Code 2021 (HN) (Lobsters) (HN)
- Leetcode has taught me that I'm a bad engineer (2022)
- happygirlzt - YouTube (Illustrations)
- Rosetta Code problems in Rust
- Linkedin Quiz Answers, Skill Assessments Test (Code)
- Ask HN: What to do about ‘Good at programming Bad at Leetcode’ (2022)
- Leetcode Company-wise Problem Lists - Lists of company wise questions available on leetcode premium.
- Leetcode Anki card generator
- LeetCode The Hard Way (Code)
- Coding interview blog archive (in Russian)