Daily Coding Challenge

A collection of freeCodeCamp daily coding challenges, organized by month and solved in JavaScript.
The goal is to practice algorithms, problem-solving, and clean coding on a consistent basis.

---

📂 Project Structure

/src
 ├── challenges/
 │    ├── 2025/
 │    │    ├── august/
 │    │    │    ├── 11.js
 │    │    │    ├── 13.js
 │    │    │    ├── 14.js
 │    │    │    ├── ...
 │    │    │    ├── challengesTests.js     # Runs tests for all August challenges
 │    │    │    └── index.js               # Exports all August challenges
 │    │    ├── september/
 │    │    │    ├── 9.js
 │    │    │    ├── 18.js
 │    │    │    ├── 19.js
 │    │    │    ├── 24.js
 │    │    │    ├── ...
 │    │    │    ├── challengesTests.js     # Runs tests for all september challenges
 │    │    │    └── index.js               # Exports all September challenges
 │    │    └── index.js         # Exports all monthly challenges from year 2025
 |    ├── 2026/
 |    │    └── ...
 |    └──  index.js             # Exports all yearly challenges
 ├── index.js              # Runs challenges tests depending of the user election
 ├── playground.test.js    # For quick tests/debugging
 └── playground.js         # For quick tests/debugging

• Each file inside challenges/<year>/<month>/ corresponds to one daily challenge.
• Each month has its own index.js that exports that month’s challenges.
• Each year has its own index.js that exports that year’s challenges.
• The main src/index.js file runs the selected challenges tests depending on the user election.

---

🚀 Getting Started

1. Clone the repository

   git clone https://github.com/EstebanCarrilloG/daily-coding-challenge.git
   cd daily-coding-challenge

2. Install dependencies

   npm install

---

📜 Available Scripts

In the project directory, you can run:

npm run start

Runs the app using nodemon on src/index.js.

npm run playground

Runs the playground script using nodemon on src/playground.js.

---

🧑‍💻 Usage

src/index.js runs all the challenges tests or only the selected depending of the user election.

Once you run npm run start you will be prompted.

 • Hello! Welcome to the Coding Challenges!

Here you can see the challenges tests for the given month and year.
Start by entering the month and year of your choice.
Note: The challenges starts from August 2025.

• Enter the month:
• Enter the year:

You should provide a valid month [january, february, ... ] || all and year >= 2025.

Example Output

For August 2025.

 • Callenges: August 2025
 ▸ 11-08-2025 - Vowel Balance
 { testCase: '123A#b!E&*456-o.U', output: true }
 ▸ 13-08-2025 - Fibonacci sequence
 {
  testCase: { startSequence: [ 21, 32 ], length: 10 },
  output: [
     21,   32,  53,  85,
    138,  223, 361, 584,
    945, 1529
  ]
}

---

🧑‍🤝‍🧑 Contributing

Contributions are welcome!
You can:

• Add new daily challenges
• Improve existing solutions
• Add explanations or comments for clarity
• Suggest optimizations

To contribute:

1. Fork the repo
2. Create a new branch
3. Add or modify challenges following the same folder structure
4. Submit a pull request 🚀

---

📜 License

This project is licensed under the MIT License – see the LICENSE file for details.

---

✨ Happy coding! ✨