Practice problems across 75+ categories
Practice problems frequently asked at Binary Tree • 177 problems | 37 Easy | 122 Medium | 17 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 151 | Recover a Tree From Preorder Traversal | Hard | StringTreeDepth-First Search |
| 152 | Recover Binary Search Tree | Medium | TreeDepth-First SearchBinary Search Tree |
| 153 | Reverse Odd Levels of Binary Tree | Medium | TreeDepth-First SearchBreadth-First Search |
| 154 | Root Equals Sum of Children | Easy | TreeBinary Tree |
| 155 | Same Tree | Easy | TreeDepth-First SearchBreadth-First Search |
| 156 | Search in a Binary Search Tree | Easy | TreeBinary Search TreeBinary Tree |
| 157 | Second Minimum Node In a Binary Tree | Easy | TreeDepth-First SearchBinary Tree |
| 158 | Serialize and Deserialize Binary Tree | Hard | StringTreeDepth-First Search |
| 159 | Serialize and Deserialize BST | Medium | StringTreeDepth-First Search |
| 160 | Smallest String Starting From Leaf | Medium | StringBacktrackingTree |
| 161 | Smallest Subtree with all the Deepest Nodes | Medium | Hash TableTreeDepth-First Search |
| 162 | Split BST | Medium | TreeBinary Search TreeRecursion |
| 163 | Step-By-Step Directions From a Binary Tree Node to Another | Medium | StringTreeDepth-First Search |
| 164 | Subtree of Another Tree | Easy | TreeDepth-First SearchString Matching |
| 165 | Subtree Removal Game with Fibonacci Tree | Hard | MathDynamic ProgrammingTree |
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