Intervals
Total Problems: 9
Completed: 9 (100%)
📚 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 | 1 | 1 | 0 | 100% |
| 🟡 Medium | 6 | 6 | 0 | 100% |
| 🔴 Hard | 2 | 2 | 0 | 100% |
Problems
| # | Problem | Difficulty | Status | Confidence |
|---|---|---|---|---|
| 298 | Meeting Rooms | E | ✅ | HGH |
| 299 | Merge Intervals | M | ✅ | HGH |
| 300 | Insert Interval | M | ✅ | MED |
| 301 | Meeting Rooms II | M | ✅ | MED |
| 302 | Non-overlapping Intervals | M | ✅ | HGH |
| 303 | Minimum Number of Arrows to Burst Balloons | M | ✅ | HGH |
| 304 | Interval List Intersections | M | ✅ | HGH |
| 305 | The Skyline Problem | H | ✅ | LOW |
| 306 | Employee Free Time | H | ✅ | HGH |
Last Updated: 2026-02-13 19:40:00
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