timercrack/trader

Coding Interview University is a GitHub repository maintained under the jwasham account that lays out a checklist-based study plan for the computer science fundamentals a software engineering interview tests. It covers sorting, trees, and graphs as a required track, then an explicitly optional back half on system design and extra tree structures for engineers with more experience. The README frames it as the author's own multi-month self-study process, later published for others to follow, and community members have translated it into multiple languages.

The Algorithms - Python is an open-source collection of algorithm implementations written in Python, maintained by the TheAlgorithms organization on GitHub. The README frames the whole project as a teaching resource: the code exists to illustrate concepts, can run slower than Python's built-in equivalents, and is indexed in DIRECTORY.md for browsing. It's MIT licensed and available on GitHub.

trekhleb/javascript-algorithms is a GitHub repository of JavaScript implementations of well-known algorithms and data structures under an MIT license. Every entry gets a dedicated README explaining it, and the collection is cross-referenced by data structure, by algorithm topic, and by algorithmic paradigm such as backtracking or divide and conquer.

Master programming by recreating your favorite technologies from scratch.