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