DFS Traversal (Inorder, Preorder, Postorder) Problems
184 DFS Traversal (Inorder, Preorder, Postorder) problems on LeetCode, a Trees interview pattern, ranked by importance (how often it comes up in real interviews). Difficulty (ELO) and importance shown per problem.
| # | PROBLEM | DIFF | ELO | IMP | PATTERNS |
|---|---|---|---|---|---|
| 1 | Serialize and Deserialize Binary Tree | Medium | 1672 | 89 | BFS / Level-Order Traversal · Frequency Counting / Hash Map Lookup |
| 2 | Maximum Depth of Binary Tree | Easy | 1028 | 88 | BFS / Level-Order Traversal |
| 3 | Binary Tree Inorder Traversal | Easy | 1048 | 88 | |
| 4 | Invert Binary Tree | Easy | 1112 | 88 | BFS / Level-Order Traversal |
| 5 | Diameter of Binary Tree | Easy | 1267 | 88 |
MORE TREES PATTERNS
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