ceetcode

leetcode, solved in c — because why not.

A growing collection of LeetCode problems written in plain C. No external libraries, no hand-holding — just pointers, manual memory, and the occasional segfault. Built for fun, learning, and a healthy disregard for convenience.

Each solution comes with annotated source, complexity analysis, and the thought process behind the approach, published at ceetcode.com.

why C?

Because the constraints sharpen the thinking. There's no HashMap<K,V>, no Vec<T>, no .sort(). You build what you need, manage every byte, and earn every segfault. It's recreational programming — the goal is to enjoy the puzzle, not to climb the LeetCode leaderboard.

what's in here

• problems/NNNN-slug/ — one folder per problem (solution.c with frontmatter + notes.md with approach & complexity)
• generator/ — a small Go static site generator that turns problems/ into the published site. Stdlib only, in keeping with the spirit. Hand-rolled C tokenizer for syntax highlighting.
• .github/workflows/deploy.yml — builds and ships to GitHub Pages on every push to main

building locally

cd generator && go build -o generator .

./generator           # prod build → docs/
./generator -dev      # includes drafts → dist/
./generator -h        # usage

license

MIT — see LICENSE.