Contributing

Contributions are welcome!

Please carefully read this page to make the code review process go as smoothly as possible and to maximize the likelihood of your contribution being merged.

Bug Reports

For bug reports or requests submit an issue.

Pull Requests

Please follow the general Repo Structure and Notebook Structure before submitting your pull request.

The preferred way to contribute is to fork the main repository on GitHub.

Fork the main repository. Click on the 'Fork' button near the top of the page. This creates a copy of the code under your account on the GitHub server.

Clone this copy to your local disk:

 $ git clone git@github.com:YourLogin/interactive-coding-challenges.git
 $ cd interactive-coding-challenges

Create a branch to hold your changes and start making changes. Don't work in the master branch!
```
 $ git checkout -b my-feature
```
Work on this copy on your computer using Git to do the version control. When you're done editing, run the following to record your changes in Git:
```
 $ git add modified_files
 $ git commit
```
Push your changes to GitHub with:
```
 $ git push -u origin my-feature
```
Finally, go to the web page of your fork of the interactive-coding-challenges repo and click 'Pull request' to send your changes for review.

Please submit one pull request per challenge.

GitHub Pull Requests Docs

If you are not familiar with pull requests, review the pull request docs.

Notebook Installation

Refer to Accessing the Challenges, Notebook Installation, and Nose Installation to set up your local environment.

Adding New Solutions to Existing Challenges

Challenges have multiple solutions. If adding new solutions to existing challenges:

Add your algorithm discussion and code solution to the existing notebook
Update the unit test to include your solution
Verify your code passes the unit tests

Adding New Challenges

The README contains several sample challenges that are not yet implemented.

The sample challenges are only suggestions, please do not limit yourself to only these topics
Feel free to send pull requests on different challenges or categories of challenges
Try to keep the "Challenge" title relatively short and expand on the details within the notebook
Review the Repo Structure and Notebook Structure sections
Check out the template challenge and solution notebooks to help you get started

Challenge	Static Notebooks
Check if a number is prime	Contribute│Contribute
Generate a list of primes	Contribute│Contribute

Update the list of challenges in the README so we can enjoy your challenge!

Update Notebook Author(s)

When contributing to a notebook, update the notebook author(s):

This notebook was prepared by Joe and Jane. Source and license info is on GitHub.

Maintain Consistent Style

Please refer to the style of existing notebooks to help maintain consistency. A consistently themed collection of notebooks will help users more seamlessly transition from challenge to challenge.

Review the following style guide.

Review PEP8 and use a validator.

Note: IPython Notebook doesn't seem to properly handle a blank line at the end of a code cell when writing the cell's contents to a file, as referenced in this issue. Notebook cells currently do not have a blank line at the end of each code cell.

Contributions in Languages Other than Python

Feel free to share your thoughts on how we could best approach adding challenges in other supported languages:

Repo structure
README challenge list
Installation instructions
Etc

Share your thoughts in this issue.

Provide feedback

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