DSA

🎯 LeetCode DSA Solutions & Logic Building 🚀

🧠 Goal: Leveling up core programming logic, pattern recognition, and problem-solving skills through LeetCode.

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🌟 Highlights & Features

• 💻 Clean & Optimized Code: High-performance, production-ready solutions.
• ⚡ Complexity Analysis: Detailed Time $O(N)$ & Space $O(1)$ breakdown for every problem.
• 🛡️ Edge Case Traps: Documented common mistakes & tricky edge cases to avoid logic bugs.
• 📝 Live Notion Integration: Connected with interactive visual notes, diagrams & mindmaps.
• 🔁 Pattern Recognition: Categorized by core DSA patterns (Two Pointers, Hash Maps, Sliding Window, etc.).

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📈 LeetCode Analytics

  

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📝 Notes & Documentation

If you are having trouble understanding any code or need detailed explanations, feel free to check out my organized DSA notes:

• 📚 Live DSA Dashboard: View My DSA Notes

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💡 Feedback & Improvements

If you spot any bugs, edge cases, or areas for improvement, I'd love to hear your feedback!

• 🌐 Social Links: You can find all my social profiles on my GitHub main page: @MehmoodCoder
• 💬 WhatsApp: Reach out directly at +92 333 4095340

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LeetCode Topics

Array

0189-rotate-array
0283-move-zeroes
0485-max-consecutive-ones
0977-squares-of-a-sorted-array
1470-shuffle-the-array
1480-running-sum-of-1d-array
1512-number-of-good-pairs
1929-concatenation-of-array
2011-final-value-of-variable-after-performing-operations

Prefix Sum

1480-running-sum-of-1d-array

Simulation

0412-fizz-buzz
1929-concatenation-of-array
2011-final-value-of-variable-after-performing-operations

Two Pointers

0125-valid-palindrome
0189-rotate-array
0283-move-zeroes
0344-reverse-string
0345-reverse-vowels-of-a-string
0392-is-subsequence
0977-squares-of-a-sorted-array
1768-merge-strings-alternately

Sorting

0242-valid-anagram
0977-squares-of-a-sorted-array

Hash Table

0205-isomorphic-strings
0242-valid-anagram
0771-jewels-and-stones
1512-number-of-good-pairs

Math

0189-rotate-array
0412-fizz-buzz
1512-number-of-good-pairs

Counting

1512-number-of-good-pairs

String

0125-valid-palindrome
0205-isomorphic-strings
0242-valid-anagram
0344-reverse-string
0345-reverse-vowels-of-a-string
0392-is-subsequence
0412-fizz-buzz
0459-repeated-substring-pattern
0771-jewels-and-stones
0796-rotate-string
1768-merge-strings-alternately
2011-final-value-of-variable-after-performing-operations

String Matching

0459-repeated-substring-pattern
0796-rotate-string

Dynamic Programming

0392-is-subsequence

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👤 Author

MehmoodCoder

• 🔗 GitHub: https://github.com/MehmoodCoder
• 🌐 Portfolio: My Portfolio Link

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📄 License

This project is open source and available under the MIT License.

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📝 Changelog

v1.0.0 (Initial Release - Core Foundation)

• 🚀 Topic Tracking: Added core solutions for Array, String, and Hash Map pattern problems.
• 💡 Notion Integration: Linked live DSA Dashboard for detailed problem breakdowns, patterns, and visual explanations.
• ⚡ Optimization Focus: Included time and space complexity ($O(N)$ / $O(1)$) analysis for each solution.
• 🛡️ Edge Cases & Mistakes: Documented common traps and failure cases to avoid logic bugs.

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🤝 Contributing

Contributions are welcome! Please feel free to submit a Pull Request.

1. Fork the repository
2. Create a feature branch (git checkout -b feature/amazing-feature)
3. Commit your changes (git commit -m 'Add amazing feature')
4. Push to the branch (git push origin feature/amazing-feature)
5. Open a Pull Request

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Happy Coding without Chai ! ☕