Interview Coding Challenges at 4Geeks Academy

By @ehiber, @marcogonzalo, @alesanchezr, @Charlytoc and other contributors at 4Geeks Academy

🌐 Estas instrucciones tambien estan disponibles en espanol.

Before you start:

We need you! These exercises are built and maintained in collaboration with people like you. If you find a bug 🐞 or a typo, please contribute and/or report it.

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🎯 Your challenge

Practice interview-style coding challenges with progressive exercises and isolated auto-evaluation in JavaScript or Python. Each repository includes numbered challenges, automated tests, and hidden solution files so you can validate your work without relying on an external environment.

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🌱 How to start the project

One-click setup (recommended)

Choose the version you want to complete and open that repository in Codespaces:

• JavaScript: interview-coding-challenge-javascript
• Python: interview-coding-challenge-python

Local setup

1. Clone or open the language-specific repository you want to work on:

   git clone https://github.com/breatheco-de/interview-coding-challenge-javascript.git
   # or
   git clone https://github.com/breatheco-de/interview-coding-challenge-python.git

2. Follow the setup instructions in that repository's README:

   • JavaScript README
   • Python README

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💻 What you need to do

• Choose whether you want to practice in JavaScript or Python.
• Open the corresponding repository (Codespaces or local clone).
• Complete the exercises in order, starting with exercises/00-welcome.
• Run each exercise's tests before moving on to the next one.

Exercise structure

The challenge is available in two separate repositories:

1. interview-coding-challenge-javascript: complete the exercises in JavaScript.
2. interview-coding-challenge-python: complete the exercises in Python.

Both repositories include:

1. exercises/00-welcome: introductory readme-only step.
2. exercises/01-... through exercises/15-...: coding challenges.

Depending on the selected language, most exercise folders include:

Language	Student files	Reference solution
JavaScript	app.js, tests.js	solution.hide.js
Python	app.py, test.py	solution.hide.py

Each exercise also includes:

• README.md: instructions in English.
• README.es.md: instructions in Spanish.

Note: This repository is an index that points to the language-specific versions. Student files are intentionally unsolved in those repositories. Keep README.md and README.es.md synchronized when content changes.

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This and many other projects are built by students as part of 4Geeks Academy Coding Bootcamps. Find out more about our Full-Stack Software Developer, Data Science & Machine Learning, Cybersecurity, and AI Engineering programs.