Design Data Structures
Total Problems: 8
Completed: 5 (62%)
📚 Pattern Master Notes
Design Data Structures - 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 | 1 | 1 | 0 | 100% |
| 🟡 Medium | 6 | 4 | 2 | 67% |
| 🔴 Hard | 1 | 0 | 1 | 0% |
Problems
| # | Problem | Difficulty | Status | Confidence |
|---|---|---|---|---|
| 313 | Min Stack | E | ✅ | HGH |
| 314 | LRU Cache | M | ✅ | HGH |
| 315 | Implement Trie (Prefix Tree) | M | ✅ | HGH |
| 316 | Design Add and Search Words Data Structure | M | ✅ | MED |
| 317 | Design Twitter | M | ⬜ | – |
| 318 | LFU Cache | M | ⬜ | – |
| 319 | Time Based Key-Value Store | M | ✅ | MED |
| 320 | All O`one Data Structure | H | ⬜ | – |
Last Updated: 2026-02-13 19:40:00
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