Go Interview Practice

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

Our interactive platform is live at app.gointerview.dev 🎉 Explore challenges, track your progress, and elevate your Go skills with AI-powered mentorship.

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Visual Overview

Interactive Challenge Platform

Our comprehensive web interface provides everything you need to practice and master Go programming:

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Code & Test Experience

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Competitive Leaderboard

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🏆 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	30/30	100.0%	Master	✅✅✅✅✅✅✅✅✅✅✅✅✅✅✅ ✅✅✅✅✅✅✅✅✅✅✅✅✅✅✅
🥈	PopovMarko	30/30	100.0%	Master	✅✅✅✅✅✅✅✅✅✅✅✅✅✅✅ ✅✅✅✅✅✅✅✅✅✅✅✅✅✅✅
🥉	mvsouza	30/30	100.0%	Master	✅✅✅✅✅✅✅✅✅✅✅✅✅✅✅ ✅✅✅✅✅✅✅✅✅✅✅✅✅✅✅
4	nzamulov	30/30	100.0%	Master	✅✅✅✅✅✅✅✅✅✅✅✅✅✅✅ ✅✅✅✅✅✅✅✅✅✅✅✅✅✅✅
5	odelbos	29/30	96.7%	Master	✅⬜✅✅✅✅✅✅✅✅✅✅✅✅✅ ✅✅✅✅✅✅✅✅✅✅✅✅✅✅✅
6	imankhodadi	28/30	93.3%	Master	✅✅✅✅✅✅✅✅✅✅✅⬜✅⬜✅ ✅✅✅✅✅✅✅✅✅✅✅✅✅✅✅
7	mick4711	23/30	76.7%	Master	✅✅✅✅✅✅✅✅✅✅⬜⬜✅✅⬜ ✅✅✅✅✅✅✅✅⬜⬜✅✅⬜⬜✅
8	Gandook	21/30	70.0%	Master	✅⬜✅✅✅✅✅✅✅✅⬜⬜✅⬜⬜ ⬜✅✅✅⬜✅✅✅✅✅✅✅⬜⬜✅
9	Kosench	21/30	70.0%	Master	✅✅✅⬜✅✅✅✅✅✅✅✅✅✅✅ ✅✅✅✅✅✅✅⬜⬜⬜⬜⬜⬜⬜⬜
10	y1hao	20/30	66.7%	Master	✅⬜✅✅✅✅✅✅⬜✅⬜⬜✅✅⬜ ✅✅✅✅✅✅✅✅⬜⬜⬜✅⬜⬜✅

Updated automatically based on 30 available challenges

Challenge Progress Overview

• Total Challenges Available: 30
• Active Developers: 363
• 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
🥇	odelbos	17	4 pkgs	🔥 Package Master	cobra: 4 • fiber: 4 • gin: 4 • gorm: 5
🥈	PolinaSvet	8	2 pkgs	💪 Package Advanced	cobra: 4 • gin: 4
🥉	PopovMarko	8	3 pkgs	💪 Package Advanced	cobra: 3 • gin: 4 • gorm: 1
4	RezaSi	7	6 pkgs	💪 Package Advanced	cobra: 1 • echo: 1 • fiber: 1 • gin: 1 • gorm: 1 • mongodb: 2
5	imankhodadi	7	2 pkgs	💪 Package Advanced	gin: 4 • gorm: 3
6	22-7-co	5	2 pkgs	💪 Package Advanced	gin: 4 • gorm: 1
7	Mxn-ptr	5	2 pkgs	💪 Package Advanced	gin: 4 • gorm: 1
8	Onkar-25	5	3 pkgs	💪 Package Advanced	gin: 2 • gorm: 2 • mongodb: 1
9	ItalloMangueBoy	4	1 pkg	🚀 Package Intermediate	gin: 4
10	father-frog	4	1 pkg	🚀 Package Intermediate	gin: 4

📦 Per-Package Progress

Cobra Package

Rank	Developer	Completed	Progress
🥇	PolinaSvet	4/4	🟩🟩🟩🟩🟩🟩🟩🟩🟩🟩 100%
🥈	odelbos	4/4	🟩🟩🟩🟩🟩🟩🟩🟩🟩🟩 100%
🥉	PopovMarko	3/4	🟩🟩🟩🟩🟩🟩🟩⬜⬜⬜ 75%
4	ashwinipatankar	3/4	🟩🟩🟩🟩🟩🟩🟩⬜⬜⬜ 75%
5	RezaSi	1/4	🟩🟩⬜⬜⬜⬜⬜⬜⬜⬜ 25%

Echo Package

Rank	Developer	Completed	Progress
🥇	RezaSi	1/4	🟩🟩⬜⬜⬜⬜⬜⬜⬜⬜ 25%

Fiber Package

Rank	Developer	Completed	Progress
🥇	odelbos	4/4	🟩🟩🟩🟩🟩🟩🟩🟩🟩🟩 100%
🥈	0xSangeet	1/4	🟩🟩⬜⬜⬜⬜⬜⬜⬜⬜ 25%
🥉	RezaSi	1/4	🟩🟩⬜⬜⬜⬜⬜⬜⬜⬜ 25%

Gin Package

Rank	Developer	Completed	Progress
🥇	22-7-co	4/4	🟩🟩🟩🟩🟩🟩🟩🟩🟩🟩 100%
🥈	ItalloMangueBoy	4/4	🟩🟩🟩🟩🟩🟩🟩🟩🟩🟩 100%
🥉	Mxn-ptr	4/4	🟩🟩🟩🟩🟩🟩🟩🟩🟩🟩 100%
4	PolinaSvet	4/4	🟩🟩🟩🟩🟩🟩🟩🟩🟩🟩 100%
5	PopovMarko	4/4	🟩🟩🟩🟩🟩🟩🟩🟩🟩🟩 100%

Gorm Package

Rank	Developer	Completed	Progress
🥇	odelbos	5/5	🟩🟩🟩🟩🟩🟩🟩🟩🟩🟩 100%
🥈	aswinsreeraj	3/5	🟩🟩🟩🟩🟩🟩⬜⬜⬜⬜ 60%
🥉	imankhodadi	3/5	🟩🟩🟩🟩🟩🟩⬜⬜⬜⬜ 60%
4	Onkar-25	2/5	🟩🟩🟩🟩⬜⬜⬜⬜⬜⬜ 40%
5	grozdovk	2/5	🟩🟩🟩🟩⬜⬜⬜⬜⬜⬜ 40%

Mongodb Package

Rank	Developer	Completed	Progress
🥇	RezaSi	2/5	🟩🟩🟩🟩⬜⬜⬜⬜⬜⬜ 40%
🥈	Onkar-25	1/5	🟩🟩⬜⬜⬜⬜⬜⬜⬜⬜ 20%
🥉	maket12	1/5	🟩🟩⬜⬜⬜⬜⬜⬜⬜⬜ 20%

📊 Package Challenge Statistics

• Total Package Challenges Available: 26

• Active Package Learners: 52

• 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

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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)

# 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:

   cd web-ui
   go run main.go
   

5. Optional: Enable AI Features: Add your Gemini API key:

   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

# 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

Quick Usage

[![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 with multiple formats ready to use.

Complete Badge Guide & Examples →

Challenge Categories

Beginner

Perfect for those new to Go or brushing up on fundamentals

• Challenge 1: Sum of Two Numbers
• Challenge 2: Reverse a String
• Challenge 3: Employee Data Management
• Challenge 6: Word Frequency Counter
• Challenge 18: Temperature Converter
• Challenge 21: Binary Search Implementation
• Challenge 22: Greedy Coin Change

Intermediate

For developers familiar with Go who want to deepen their knowledge

• Challenge 4: Concurrent Graph BFS Queries
• Challenge 5: HTTP Authentication Middleware
• Challenge 7: Bank Account with Error Handling
• Challenge 10: Polymorphic Shape Calculator
• Challenge 13: SQL Database Operations
• Challenge 14: Microservices with gRPC
• Challenge 16: Performance Optimization
• Challenge 17: Interactive Debugging Tutorial
• Challenge 19: Slice Operations
• Challenge 20: Circuit Breaker Pattern
• Challenge 23: String Pattern Matching
• Challenge 27: Go Generics Data Structures
• Challenge 30: Context Management Implementation

Advanced

Challenging problems that test mastery of Go and computer science concepts

• Challenge 8: Chat Server with Channels
• Challenge 9: RESTful Book Management API
• Challenge 11: Concurrent Web Content Aggregator
• Challenge 12: File Processing Pipeline
• Challenge 15: OAuth2 Authentication
• Challenge 24: Dynamic Programming - Longest Increasing Subsequence
• Challenge 25: Graph Algorithms - Shortest Path
• Challenge 26: Regular Expression Text Processor
• Challenge 28: Cache Implementation with Multiple Eviction Policies
• 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 for detailed guidelines on both challenge types.

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License

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

Stargazers over time

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🏢 Premium Sponsors

Thank you to our premium sponsors who make this project possible!

🥈 Silver Sponsors

🏗️ Infrastructure Sponsors

Interested in premium sponsorship? Contact us to feature your company logo here and on our platform!

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Happy Coding! 💻