Two Pointers
Total Problems: 13
Completed: 12 (92%)
📚 Pattern Master Notes
This comprehensive guide includes: - 🧠 Pattern recognition & problem-solving mindset - 🎯 Sub-patterns and variations - 🏆 Golden templates and code examples - ⚠️ Common pitfalls and debugging tips - 📊 Decision trees and quick reference tables
💡 Tip: Read the notes before starting problems to build intuition!
Progress by Difficulty
| Difficulty | Total | Completed | Remaining | Percentage |
|---|---|---|---|---|
| 🟢 Easy | 3 | 3 | 0 | 100% |
| 🟡 Medium | 8 | 7 | 1 | 88% |
| 🔴 Hard | 2 | 2 | 0 | 100% |
Problems
| # | Problem | Difficulty | Status | Confidence |
|---|---|---|---|---|
| 21 | Remove Duplicates from Sorted Array | E | ✅ | HGH |
| 22 | Valid Palindrome | E | ✅ | HGH |
| 23 | Move Zeroes | E | ✅ | HGH |
| 24 | Container With Most Water | M | ✅ | MED |
| 25 | 3Sum | M | ✅ | LOW |
| 26 | 3Sum Closest | M | ✅ | LOW |
| 27 | 4Sum | M | ✅ | LOW |
| 28 | Remove Duplicates from Sorted Array II | M | ⬜ | MED |
| 29 | Compare Version Numbers | M | ✅ | HGH |
| 30 | Two Sum II - Input Array Is Sorted | M | ✅ | HGH |
| 31 | Squares of a Sorted Array | M | ✅ | HGH |
| 32 | Trapping Rain Water | H | ✅ | LOW |
| 33 | Minimum Window Substring | H | ✅ | LOW |
Last Updated: 2026-02-13 19:40:00
Auto-generated from CSV by update_progress.py