Master the 20 Most Essential DSA Patterns that form the backbone of 90%+ coding interview questions asked by top tech companies like Google, Amazon, Meta, Microsoft, and more.
Each pattern includes:
- 🔗 Curated Problem Lists (Easy → Medium → Hard)
- 💡 Clear Explanations
- ✅ Well-Commented Code Solutions (Java)
- 🧠 Practice Links (LeetCode + GFG)
- ✅ How to use the Pattern-First Approach
- 🔄 Revision & Tracking Strategy (weekly, monthly)
- 📘 How to avoid common pitfalls & build pattern intuition
This is more than a problem list—it's a systematic path to:
- Crack any DSA round confidently
- Build lasting pattern recognition
- Save time by avoiding random prep
We welcome contributions! You can:
- 🧠 Add new optimized solutions
- 🔧 Improve existing code or explanations
- 📝 Enhance pattern notes or add tips
- 📢 Share your interview experiences based on these patterns
Want to contribute? Just fork, add, and open a PR! 🙌
If this helped you:
- ⭐️ Star the repo to support
- 📤 Share with friends preparing for tech interviews
Made with ❤️ by Rohit Mishra
Have suggestions or feedback? Feel free to reach out!
Happy Coding & All the Best for Your Interviews! 🚀