Tries
Total Problems: 7
Completed: 6 (86%)
📚 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 | 4 | 4 | 0 | 100% |
| 🔴 Hard | 2 | 1 | 1 | 50% |
Problems
| # | Problem | Difficulty | Status | Confidence |
|---|---|---|---|---|
| 161 | Implement Trie (Prefix Tree) | E | ✅ | HGH |
| 162 | Design Add and Search Words Data Structure | M | ✅ | MED |
| 163 | Maximum XOR of Two Numbers in an Array | M | ✅ | MED |
| 164 | Replace Words | M | ✅ | HGH |
| 165 | Longest Word in Dictionary | M | ✅ | MED |
| 166 | Word Search II | H | ✅ | MED |
| 167 | Design Search Autocomplete System | H | ⬜ | – |
Last Updated: 2026-02-13 19:40:00
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