# Go Interview Practice

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**⭐ Star the repo if it’s useful to you**

Welcome to the **Go Interview Practice** repository! Master Go programming and ace your technical interviews with our interactive coding challenges.

**Go Interview Practice is now part of [ProdPath](https://prodpath.dev)** — the complete platform for becoming a production-ready developer with Cloud Labs, System Design, and AI mentorship. Our interactive platform is live at **[app.gointerview.dev](https://app.gointerview.dev/)** 🎉 Explore challenges, track your progress, and elevate your Go skills with AI-powered mentorship.

--- ## Visual Overview ### Interactive Challenge Platform Our comprehensive web interface provides everything you need to practice and master Go programming:

A brief introduction to the project

--- ### Code & Test Experience

Go Interview Practice Web UI - challenge

Interactive Code Editor
Write, edit, and test your Go solutions
with syntax highlighting and real-time feedback

Instant Results & Analytics
Get immediate test results, performance metrics,
and detailed execution analysis

--- ### Competitive Leaderboard

Go Interview Practice - Main Leaderboard

Beautiful leaderboard showcasing top developers with challenge completion indicators, rankings, and achievements

--- ## 🏆 Top 10 Leaderboard Our most accomplished Go developers, ranked by number of challenges completed: > **Note**: The data below is automatically updated by GitHub Actions when challenge scoreboards change. | 🏅 | Developer | Solved | Rate | Achievement | Progress | |:---:|:---:|:---:|:---:|:---:|:---| | 🥇 |

**[PolinaSvet](https://github.com/PolinaSvet)** | **30**/30 | **100.0%** | Master | ✅✅✅✅✅✅✅✅✅✅✅✅✅✅✅
✅✅✅✅✅✅✅✅✅✅✅✅✅✅✅ | | 🥈 |

**[nzamulov](https://github.com/nzamulov)** | **30**/30 | **100.0%** | Master | ✅✅✅✅✅✅✅✅✅✅✅✅✅✅✅
✅✅✅✅✅✅✅✅✅✅✅✅✅✅✅ | | 🥉 |

**[odelbos](https://github.com/odelbos)** | **30**/30 | **100.0%** | Master | ✅✅✅✅✅✅✅✅✅✅✅✅✅✅✅
✅✅✅✅✅✅✅✅✅✅✅✅✅✅✅ | | 4 |

**[mick4711](https://github.com/mick4711)** | **23**/30 | **76.7%** | Master | ✅✅✅✅✅✅✅✅✅✅⬜⬜✅✅⬜
✅✅✅✅✅✅✅✅⬜⬜✅✅⬜⬜✅ | | 5 |

**[Gandook](https://github.com/Gandook)** | **22**/30 | **73.3%** | Master | ✅✅✅✅✅✅✅✅✅✅⬜⬜✅⬜⬜
⬜✅✅✅⬜✅✅✅✅✅✅✅⬜⬜✅ | | 6 |

**[y1hao](https://github.com/y1hao)** | **21**/30 | **70.0%** | Master | ✅✅✅✅✅✅✅✅⬜✅⬜⬜✅✅⬜
✅✅✅✅✅✅✅✅⬜⬜⬜✅⬜⬜✅ | | 7 |

**[JackDalberg](https://github.com/JackDalberg)** | **20**/30 | **66.7%** | Master | ✅✅✅✅✅✅✅✅⬜✅⬜⬜✅✅⬜
⬜✅✅✅✅✅✅✅⬜⬜⬜✅⬜⬜✅ | | 8 |

**[Ali-Fartoot](https://github.com/Ali-Fartoot)** | **19**/30 | **63.3%** | Expert | ✅✅✅✅✅✅✅✅⬜✅⬜⬜✅⬜⬜
✅✅✅✅⬜✅✅✅⬜⬜⬜✅⬜⬜✅ | | 9 |

**[Cpoing](https://github.com/Cpoing)** | **17**/30 | **56.7%** | Expert | ✅✅✅✅⬜✅✅✅✅✅✅✅✅✅✅
⬜✅✅⬜⬜✅⬜⬜⬜⬜⬜⬜⬜⬜⬜ | | 10 |

**[ashwinipatankar](https://github.com/ashwinipatankar)** ❤️ | **17**/30 | **56.7%** | Expert | ✅✅✅⬜✅✅✅⬜✅✅⬜⬜✅✅⬜
⬜✅✅✅⬜⬜✅✅⬜⬜⬜✅⬜⬜✅ |

✅ Completed • ⬜ Not Completed *All 30 challenges shown in two rows*

*Updated automatically based on 30 available challenges* ### Challenge Progress Overview - **Total Challenges Available**: 30 - **Active Developers**: 252 - **Most Challenges Solved**: 30 by PolinaSvet ## 🚀 Package Challenges Leaderboard Master Go packages through hands-on challenges! Each package offers a structured learning path with real-world scenarios. > **Note**: The data below is automatically updated by GitHub Actions when package challenge scoreboards change. | 🏅 | Developer | Total Solved | Packages | Achievement | Challenge Distribution | |:---:|:---:|:---:|:---:|:---:|:---| | 🥇 |

**[father-frog](https://github.com/father-frog)** | **4** | **1** pkg | 🚀 Package Intermediate | **gin**: 4 | | 6 |

**[q1ngy](https://github.com/q1ngy)** | **4** | **1** pkg | 🚀 Package Intermediate | **gin**: 4 | | 7 |

**[BrianHuang813](https://github.com/BrianHuang813)** | **3** | **1** pkg | 🚀 Package Intermediate | **gin**: 3 | | 8 |

**[ashwinipatankar](https://github.com/ashwinipatankar)** ❤️ | **3** | **1** pkg | 🚀 Package Intermediate | **cobra**: 3 | | 10 |

🚀 **Package Challenges** - Learn Go packages through practical, real-world scenarios

### 📦 Per-Package Progress #### Cobra Package | Rank | Developer | Completed | Progress | |:---:|:---:|:---:|:---| | 🥇 | **[PolinaSvet](https://github.com/PolinaSvet)** | 4/4 | 🟩🟩🟩🟩🟩🟩🟩🟩🟩🟩 100% | | 🥈 | **[odelbos](https://github.com/odelbos)** | 4/4 | 🟩🟩🟩🟩🟩🟩🟩🟩🟩🟩 100% | | 🥉 | **[ashwinipatankar](https://github.com/ashwinipatankar)** | 3/4 | 🟩🟩🟩🟩🟩🟩🟩⬜⬜⬜ 75% | | 4 | **[RezaSi](https://github.com/RezaSi)** | 1/4 | 🟩🟩⬜⬜⬜⬜⬜⬜⬜⬜ 25% | #### Echo Package | Rank | Developer | Completed | Progress | |:---:|:---:|:---:|:---| | 🥇 | **[RezaSi](https://github.com/RezaSi)** | 1/4 | 🟩🟩⬜⬜⬜⬜⬜⬜⬜⬜ 25% | #### Fiber Package | Rank | Developer | Completed | Progress | |:---:|:---:|:---:|:---| | 🥇 | **[odelbos](https://github.com/odelbos)** | 4/4 | 🟩🟩🟩🟩🟩🟩🟩🟩🟩🟩 100% | | 🥈 | **[RezaSi](https://github.com/RezaSi)** | 1/4 | 🟩🟩⬜⬜⬜⬜⬜⬜⬜⬜ 25% | #### Gin Package | Rank | Developer | Completed | Progress | |:---:|:---:|:---:|:---| | 🥇 | **[22-7-co](https://github.com/22-7-co)** | 4/4 | 🟩🟩🟩🟩🟩🟩🟩🟩🟩🟩 100% | | 🥈 | **[PolinaSvet](https://github.com/PolinaSvet)** | 4/4 | 🟩🟩🟩🟩🟩🟩🟩🟩🟩🟩 100% | | 🥉 | **[father-frog](https://github.com/father-frog)** | 4/4 | 🟩🟩🟩🟩🟩🟩🟩🟩🟩🟩 100% | | 4 | **[odelbos](https://github.com/odelbos)** | 4/4 | 🟩🟩🟩🟩🟩🟩🟩🟩🟩🟩 100% | | 5 | **[q1ngy](https://github.com/q1ngy)** | 4/4 | 🟩🟩🟩🟩🟩🟩🟩🟩🟩🟩 100% | #### Gorm Package | Rank | Developer | Completed | Progress | |:---:|:---:|:---:|:---| | 🥇 | **[odelbos](https://github.com/odelbos)** | 5/5 | 🟩🟩🟩🟩🟩🟩🟩🟩🟩🟩 100% | | 🥈 | **[aswinsreeraj](https://github.com/aswinsreeraj)** | 3/5 | 🟩🟩🟩🟩🟩🟩⬜⬜⬜⬜ 60% | | 🥉 | **[grozdovk](https://github.com/grozdovk)** | 2/5 | 🟩🟩🟩🟩⬜⬜⬜⬜⬜⬜ 40% | | 4 | **[22-7-co](https://github.com/22-7-co)** | 1/5 | 🟩🟩⬜⬜⬜⬜⬜⬜⬜⬜ 20% | | 5 | **[Kinsue](https://github.com/Kinsue)** | 1/5 | 🟩🟩⬜⬜⬜⬜⬜⬜⬜⬜ 20% | #### Mongodb Package | Rank | Developer | Completed | Progress | |:---:|:---:|:---:|:---| | 🥇 | **[RezaSi](https://github.com/RezaSi)** | 2/5 | 🟩🟩🟩🟩⬜⬜⬜⬜⬜⬜ 40% | | 🥈 | **[Onkar-25](https://github.com/Onkar-25)** | 1/5 | 🟩🟩⬜⬜⬜⬜⬜⬜⬜⬜ 20% | ### 📊 Package Challenge Statistics - **Total Package Challenges Available**: 26 - **Active Package Learners**: 35 - **Available Packages**: 6 (cobra, echo, fiber, gin, gorm, mongodb) - **Most Package Challenges Solved**: 17 by odelbos ## Key Features - **Interactive Web UI** - Code, test, and submit solutions in your browser - **Automated Testing** - Get immediate feedback on your solutions - **Automated Scoreboards** - Solutions are automatically scored and ranked - **Profile Badges** - Beautiful auto-updating badges for GitHub profiles, LinkedIn, and portfolios - **Performance Analytics** - Track execution time and memory usage for your solutions - **Comprehensive Learning** - Each challenge includes detailed explanations and resources - **Progressive Difficulty** - From beginner to advanced Go concepts - **AI Interview Simulation** - Practice with AI-powered code review and interviewer questions ## AI Interview Simulation Transform your coding practice into realistic interview scenarios with our AI-powered features: **Real-Time Code Review** - Get instant feedback on code quality, complexity analysis, and improvement suggestions **Dynamic Interview Questions** - AI generates follow-up questions based on your solution approach **Progressive Hints** - 4-level hint system from subtle nudges to detailed explanations **Multi-LLM Support** - Works with Gemini (recommended), OpenAI, or Claude Simply add your API key to experience interview-style feedback that adapts to your code and challenges you with realistic technical questions. ### AI Interview Experience

AI Code Review - Real-time feedback and analysis

AI Interview Questions - Dynamic follow-up questions

AI Code Review
Get instant feedback on code quality, complexity analysis,
and improvement suggestions from AI

Dynamic Interview Questions
AI generates follow-up questions based on your
solution approach and coding patterns

--- ## Quick Start > **Important**: You must fork this repository first before cloning, otherwise you won't be able to push your solutions or create pull requests! ### Option 1: Web UI (Recommended) ```bash # 1. First, fork this repository on GitHub # Go to https://github.com/RezaSi/go-interview-practice # Click the "Fork" button in the top-right corner # 2. Clone your forked repository (replace 'yourusername' with your GitHub username) git clone https://github.com/yourusername/go-interview-practice.git cd go-interview-practice # 3. Start the web interface cd web-ui go run main.go # 4. Open http://localhost:8080 in your browser # 5. Optional: Enable AI Features (Recommended) 🤖 # Add your free Gemini API key to enable AI interview simulation echo "AI_PROVIDER=gemini" > web-ui/.env echo "GEMINI_API_KEY=your_actual_api_key_here" >> web-ui/.env # Get your free API key: https://makersuite.google.com/app/apikey # Note: .env files are automatically ignored by git for security ``` **After solving challenges and submitting solutions:** - Your solutions will be automatically saved to your local repository - Follow the provided Git commands to commit and push your changes - Create a pull request to contribute your solutions back to the main project ### Option 2: GitHub Codespaces (Cloud Development + Web UI) Want to get started instantly without setting up anything locally? Use GitHub Codespaces! 1. **Fork this repository** (if you haven't already) 2. **Open in Codespaces**: Click the green "Code" button on your forked repository, then select "Codespaces" tab 3. **Create Codespace**: Click "Create codespace on main" 4. **Start the Web UI**: Once the codespace loads, open a terminal and run: ```bash cd web-ui go run main.go ``` 5. **Optional: Enable AI Features**: Add your Gemini API key: ```bash echo "AI_PROVIDER=gemini" > .env echo "GEMINI_API_KEY=your_actual_api_key_here" >> .env ``` 6. **Access the Web UI**: Click on the "Ports" tab in the bottom panel, then click the "Open in Browser" button next to port 8080 **Benefits of using Codespaces:** - No local setup required - Pre-configured Go environment - Full VS Code experience in the browser - Automatic port forwarding for the web UI - All dependencies pre-installed - Works on any device with a browser ### Option 3: Command Line ```bash # 1. Fork the repository first (see step 1 above) # 2. Clone your fork and set up a challenge workspace git clone https://github.com/yourusername/go-interview-practice.git cd go-interview-practice ./create_submission.sh 1 # For challenge #1 # 3. Implement your solution in the editor of your choice # 4. Run tests cd challenge-1 ./run_tests.sh ``` ## Profile Badges for Contributors Showcase your Go programming achievements with auto-updating profile badges for GitHub profiles, portfolios, and personal websites. ### Examples [![Go Interview Practice Achievement](https://raw.githubusercontent.com/RezaSi/go-interview-practice/main/badges/RezaSi.svg)](https://github.com/RezaSi/go-interview-practice) [![Go Interview Practice Compact](https://raw.githubusercontent.com/RezaSi/go-interview-practice/main/badges/RezaSi_compact.svg)](https://github.com/RezaSi/go-interview-practice) ### Quick Usage ```markdown [![Go Interview Practice Achievement](https://raw.githubusercontent.com/RezaSi/go-interview-practice/main/badges/YOUR_USERNAME.svg)](https://github.com/RezaSi/go-interview-practice) ``` After contributing solutions, your badges are automatically generated in [`badges/YOUR_USERNAME_badges.md`](badges/) with multiple formats ready to use. **[Complete Badge Guide & Examples →](docs/profile-badges-guide.md)** ## Challenge Categories ### Beginner Perfect for those new to Go or brushing up on fundamentals - **[Challenge 1](./challenge-1)**: Sum of Two Numbers - **[Challenge 2](./challenge-2)**: Reverse a String - **[Challenge 3](./challenge-3)**: Employee Data Management - **[Challenge 6](./challenge-6)**: Word Frequency Counter - **[Challenge 18](./challenge-18)**: Temperature Converter - **[Challenge 21](./challenge-21)**: Binary Search Implementation - **[Challenge 22](./challenge-22)**: Greedy Coin Change ### Intermediate For developers familiar with Go who want to deepen their knowledge - **[Challenge 4](./challenge-4)**: Concurrent Graph BFS Queries - **[Challenge 5](./challenge-5)**: HTTP Authentication Middleware - **[Challenge 7](./challenge-7)**: Bank Account with Error Handling - **[Challenge 10](./challenge-10)**: Polymorphic Shape Calculator - **[Challenge 13](./challenge-13)**: SQL Database Operations - **[Challenge 14](./challenge-14)**: Microservices with gRPC - **[Challenge 16](./challenge-16)**: Performance Optimization - **[Challenge 17](./challenge-17)**: Interactive Debugging Tutorial - **[Challenge 19](./challenge-19)**: Slice Operations - **[Challenge 20](./challenge-20)**: Circuit Breaker Pattern - **[Challenge 23](./challenge-23)**: String Pattern Matching - **[Challenge 27](./challenge-27)**: Go Generics Data Structures - **[Challenge 30](./challenge-30)**: Context Management Implementation ### Advanced Challenging problems that test mastery of Go and computer science concepts - **[Challenge 8](./challenge-8)**: Chat Server with Channels - **[Challenge 9](./challenge-9)**: RESTful Book Management API - **[Challenge 11](./challenge-11)**: Concurrent Web Content Aggregator - **[Challenge 12](./challenge-12)**: File Processing Pipeline - **[Challenge 15](./challenge-15)**: OAuth2 Authentication - **[Challenge 24](./challenge-24)**: Dynamic Programming - Longest Increasing Subsequence - **[Challenge 25](./challenge-25)**: Graph Algorithms - Shortest Path - **[Challenge 26](./challenge-26)**: Regular Expression Text Processor - **[Challenge 28](./challenge-28)**: Cache Implementation with Multiple Eviction Policies - **[Challenge 29](./challenge-29)**: Rate Limiter Implementation ## How to Use This Repository ### 1. Explore Challenges Browse challenges through the web UI or in the code repository. Each challenge includes: - Detailed problem statement - Function signature to implement - Comprehensive test cases - Learning resources ### 2. Implement Your Solution Write code that solves the challenge requirements and passes all test cases. ### 3. Test & Refine Use the built-in testing tools to validate your solution, then refine it for: - Correctness - Efficiency - Code quality ### 4. Submit & Compare Submit your passing solution to be added to the scoreboard: - Your solution is automatically tested and scored - Execution time and resource usage are recorded - Your solution is ranked among other submissions - Access detailed performance metrics to optimize further ### 5. Learn & Progress Review the learning materials to deepen your understanding of the concepts used. ## Contributing We welcome contributions! You can contribute in several ways: **Submit Solutions:** - Solve existing classic or package challenges - Submit your solutions via pull request **Add New Challenges:** - **Package Challenges:** Framework-specific practical applications (Gin, Cobra, GORM, etc.) **Quick Steps:** 1. Fork the repository 2. Choose challenge type (classic or package-based) 3. Follow our template structure 4. Submit a pull request See [CONTRIBUTING.md](CONTRIBUTING.md) for detailed guidelines on both challenge types. --- ## License This project is licensed under the MIT License - see the [LICENSE](LICENSE) file for details. ## Stargazers over time [![Stargazers over time](https://starchart.cc/RezaSi/go-interview-practice.svg?variant=adaptive)](https://starchart.cc/RezaSi/go-interview-practice) --- ## 🏢 Premium Sponsors *Thank you to our premium sponsors who make this project possible!* ### 🥈 Silver Sponsors

### 🏗️ Infrastructure Sponsors

###### Interested in premium sponsorship? [Contact us](https://github.com/sponsors/RezaSi) to feature your company logo here and on our platform! --- **Happy Coding!** 💻

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The Go Interview Practice