Algorithms (Erickson)
Jeff Erickson's CC BY 4.0 algorithms textbook — recursion, divide-and-conquer, DP, greedy, graphs, shortest paths — taught with care and the occasional pun. Pseudocode in the prose, idiomatic Python in the editor.
- Python
- 23 lessons
- ~5 hours
- Free
- by Jeff Erickson
Learn Python for free on Libre Academy with the Algorithms (Erickson) course: 23 interactive lessons you complete by writing real code in a built-in editor, graded instantly by hidden tests. No paywall, no sign-up — it runs in your browser and the free desktop app.
What you get
- Hands-on lessons with a real editor and instant, test-graded feedback.
- Free and open source — no account required to start.
- Runs in your browser, and offline in the free desktop app.
- Python runs in your browser.
What's inside
- Recursion and Recurrences
- Divide and Conquer
- Backtracking
- Dynamic Programming
- Greedy Algorithms
- Graph Search
- Shortest Paths