code-corner

Small programming problems, each solved in a few different languages, plus a script that checks every solution against test cases.

Running the checks

python3 run.py                    # every problem
python3 run.py prime              # just one problem
python3 run.py --lang py          # only Python solutions
python3 run.py prime --lang cpp   # one problem, one language

It needs Python 3. On Windows the command is python. Solutions in languages you don't have installed are skipped.

Supported languages: py, js, c, cpp, java, go, rs

The runner reports timing for each solution and shows a final summary:

Summary: 12 passed, 0 failed, 3 skipped

Codespaces has all languages installed. By default, each solution has a total 10-second budget for compilation and all test cases. Individual problems can override this by adding a timeout.txt file with the limit in seconds. When the budget expires, the runner stops the solution and any processes it spawned.

Layout

problems/
  prime/
    README.md       what the program has to do
    cases.txt       one test per line: input | expected output
    solution.cpp
    solution.py

Every solution reads its input from stdin and prints the answer. Java files are named Solution.java with a Solution class.

Contributing

• Add a solution in a language a problem doesn't have yet (solution.rs, solution.c, ...).
• Add test cases to a cases.txt, especially edge cases the README mentions but the cases don't cover yet.
• Add a new problem: a folder with a README.md, a cases.txt and at least one solution.
• If a solution gives the wrong answer for an input the README says it should handle, that's a bug. Open an issue with the input, the expected output and what you got, then fix it and add the input to cases.txt.

Run python3 run.py before opening a pull request. It also runs on every pull request.

Part of Source Start by CSI SPIT. MIT licensed.