Provide analysis and summary for Valuable LeetCode problems
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| Solution | Proficiency | Tags |
|---|---|---|
| 299. Bulls and Cows | focus on one pass solution | Array |
| 849. Maximize Distance to Closest Person | focus on one pass solution | Array |
| 611. Valid Triangle Number | O(N^2) | Array |
| 1396. Design Underground System | Neat and Efficient Design | System/OOD Design |
| 1102. Path With Maximum Minimum Value | Dijkstra | BFS |
| 1631. Path With Minimum Effort | Dijkstra | BFS |
| 1209. Remove All Adjacent Duplicates in String II | Single Stack | Stack & String |
| 99. Recover Binary Search Tree | In-Order | Tree |
| 723. Candy Crush | Tricky Design | Game |
| 445. Add Two Numebrs | Add Operations | LinkedList/Math |
| 662. Maximum Width of Binary Tree | Level + node index | Tree + BFS/DFS |
| 310. Minimum Height Trees | delete leaves | BFS |