Monotonic Stack
Total Problems: 10
Completed: 9 (90%)
📚 Pattern Master Notes
Monotonic Stack - Complete Guide
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 | 0 | 0 | 0 | 0% |
| 🟡 Medium | 7 | 7 | 0 | 100% |
| 🔴 Hard | 3 | 2 | 1 | 67% |
Problems
| # | Problem | Difficulty | Status | Confidence |
|---|---|---|---|---|
| 121 | Remove K Digits | M | ✅ | MED |
| 122 | 132 Pattern | M | ✅ | LOW |
| 123 | Next Greater Element I | M | ✅ | LOW |
| 124 | Next Greater Element II | M | ✅ | MED |
| 125 | Daily Temperatures | M | ✅ | HGH |
| 126 | Online Stock Span | M | ✅ | MED |
| 127 | Sum of Subarray Minimums | M | ✅ | LOW |
| 128 | Trapping Rain Water | H | ✅ | HGH |
| 129 | Largest Rectangle in Histogram | H | ✅ | HGH |
| 130 | Maximal Rectangle | H | ⬜ | – |
Last Updated: 2026-02-13 19:40:00
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