A community-driven repository of Data Structure & Algorithm solutions for GeeksforGeeks (GFG) Daily POTD (Problem of the Day). Solve problems daily, learn multiple approaches, and contribute to help others prepare for technical interviews.
🚀 Future Plan: Will expand to LeetCode, Codeforces, HackerRank, and more platforms soon!
DailyCode is a curated collection of daily GFG POTD solutions organized by difficulty level (Easy, Medium, Hard). Each problem includes:
- ✅ Multiple Solutions - Different approaches (brute force, optimized, etc.)
- 📝 Detailed Explanations - Intuition, algorithm breakdown, and complexity analysis
- 🔧 Multi-language Support - Solutions in C++ and Python
- 💡 Real Interview Insights - Common patterns and tricks
Perfect for:
- 📚 Interview Preparation - Strengthen your DSA fundamentals
- 🤝 Learning Together - Learn from multiple solution approaches
- 🚀 Consistent Practice - Daily GFG POTD problem-solving habit
- 🌟 Contributing - Share your knowledge with the community
Current Focus:
- GeeksforGeeks POTD - Daily Problems ✅
Coming Soon:
- LeetCode - Premium problems & company-specific questions
- Codeforces - Competitive programming
- HackerRank - Structured learning paths
- And more!
DailyCode/
├── EASY/
│ ├── Problem 1/
│ │ ├── explain.md # Problem explanation & approach
│ │ ├── solution.cpp # C++ implementation
│ │ ├── solution.py # Python implementation
| | └── solution.java # Java implementation
| |
│ └── Problem N/
│ ├── explain.md
│ ├── solution.cpp
│ └── solution.py
│
├── BASICS/
│ └── (Similar structure)
|
|
├── MEDIUM/
│ └── (Similar structure)
│
├── HARD/
│ └── (Similar structure)
│
├── README.md
├── LICENSE
└── CONTRIBUTING.md
- By Difficulty: Pick a folder (EASY/MEDIUM/HARD) based on your level
- By Problem: Each folder contains a unique GFG POTD with complete solution
- Learning Path: Start with EASY, progress to MEDIUM, then HARD
- Topic-based: Use the problems to learn and master DSA concepts
git clone https://github.com/yourusername/DailyCode.git
cd DailyCode# View a specific problem
cd EASY/"Problem Name"
cat explain.md # Read the explanation
cat solution.cpp # View C++ solution
cat solution.py # View Python solution
cat solution.java # View Java solution- Read the explain.md to understand the approach
- Study both C++ and Python implementations
- Try solving it yourself before looking at solutions
- Analyze time/space complexity and optimize
- Start with EASY problems to build fundamentals
- Move to MEDIUM for interview-style questions
- Challenge yourself with HARD for competitive prep
- Review explanations to understand multiple approaches
- Solve the GFG Daily POTD yourself first
- Compare your solution with ours
- Learn alternative approaches
- Understand complexity trade-offs
- Look for similar problem patterns
- Understand when to use specific techniques:
- Sliding Window, Two Pointers
- Dynamic Programming, Greedy
- Graph algorithms, etc.
| Difficulty | Count | Topics Covered |
|---|---|---|
| BASICS | 12+ | Anagram Palindrome, Remove Spaces |
| EASY | 18+ | Arrays, Strings, Basic Data Structures |
| MEDIUM | 30+ | Sliding Window, DP, Two Pointers, Hashing |
| HARD | 15+ | Advanced DP, Graph Algorithms, Optimization |
We ❤️ contributions! Help us grow this repository and make DSA preparation easier for everyone.
-
Add a Solution
# Create folder for new problem mkdir "DIFFICULTY/Problem Name" # Add files - explain.md (problem explanation & approach) - solution.cpp (C++ solution) - solution.py (Python solution) - solution..py (Java solution)
-
Solution Template (explain.md)
# Problem Name ## Problem Statement [Description] ## Approach [Intuition and algorithm] ## Complexity Analysis - Time: O(...) - Space: O(...) ## Example [Sample input/output]
-
Code Quality
- Clean, readable code with comments
- Include time and space complexity info
- Test your solution before submitting
-
Submit
- Fork the repository
- Create a branch:
git checkout -b add/problem-name - Commit changes:
git commit -m "Add: Problem Name solution" - Push and create a Pull Request
- ✍️ Add Missing Explanations - Missing explain.md file?
- 💻 Optimize Solutions - Better approach? Submit an optimized version
- 🐛 Fix Issues - Found a bug? Report or fix it
- 📚 Improve Docs - Better explanations? Let's improve together
- 🎯 Add Comparisons - Multiple approaches for same problem
- 🏷️ Create Topic Index - Organize by DSA concepts
- 🚀 Platform Expansion - Help setup for LeetCode, Codeforces, etc.
- Be respectful and constructive
- Help others learn, don't just judge
- Share knowledge generously
- Respect copyright and licenses
Tracking Daily POTD Solutions
Current Status:
- ☁️ Basic Problems: Collecting
- ✅ Easy Problems: Solved & Documented
- 🔄 Medium Problems: In Progress
- 🚀 Hard Problems: Being Added
Last Updated: March 2026
🔮 Future: Multi-platform support coming soon!
✨ Multiple Approaches per problem
- Brute force solutions
- Optimized approaches
- Trade-off analysis
🎓 Educational Content
- Algorithm intuition
- Complexity analysis
- Step-by-step examples
🛠️ Practical Code
- Production-ready solutions
- Edge case handling
- Well-commented code
🔗 Easy Navigation
- Organized by difficulty
- Clear problem grouping
- Detailed READMEs
Q: Are these solutions optimal? A: Most are optimized, but we welcome submissions of better approaches!
Q: Can I use these in interviews? A: Yes, but understand the logic. Memorizing without understanding doesn't help.
Q: How often are new problems added? A: Daily! We solve the GFG POTD and add solutions here.
Q: Can I contribute? A: Absolutely! See CONTRIBUTING.md for details.
Q: Will you add problems from other platforms? A: Yes! We're planning to expand to LeetCode, Codeforces, HackerRank soon. Stay tuned!
Problem Platforms (Primary & Future):
- GeeksforGeeks POTD - Daily problems (Current)
- LeetCode - Premium problems & company questions (Planned)
- Codeforces - Competitive programming (Planned)
- HackerRank - Guided learning paths (Planned)
Learning Guides:
- GeeksforGeeks DSA - Comprehensive DSA guide
- AlgoExpert - Video explanations
- JavaScript Algorithms - Algorithm implementations
This project is licensed under the MIT License - see LICENSE file for details.
If this repository helps you in your DSA journey, please:
- ⭐ Star this repository
- 👥 Follow for updates
- 🚀 Share with friends
- 🤝 Contribute your solutions
- 💬 Open an Issue for questions
- 🐛 Report bugs via Issues
- 💡 Suggest improvements in Discussions
Happy Coding! 🚀 | Keep Learning! 📚 | Enjoy Problem Solving! 💡