FAANG Interview Binary Tree
🌳 Binary Tree Guide
Binary Tree — Complete Interview Guide
Master binary trees with concepts, patterns, and interview-focused problems.
Core Topic DSA
|
Level Easy → Hard
|
Focus DFS + BFS
Concept
Easy
Binary Tree
What is a Binary Tree?
A binary tree is a hierarchical data structure where each node has at most two children:
left and right.
Use Case: Search, Traversal
Core
Easy
Key Characteristics
- Node → contains value
- Root → top node
- Leaf → no children
- Subtree → node + descendants
Types
Medium
Types of Binary Trees
- Full Binary Tree
- Perfect Binary Tree
- Complete Binary Tree
- Balanced Tree
- Binary Search Tree (BST)
Operations
Medium
Operations
- Insertion
- Deletion
- Traversal (DFS / BFS)
Usage
Medium
Applications
Used in BSTs, heaps, compilers, expression trees, and search problems.
Traversal
Important
DFS vs BFS
DFS explores depth using recursion/stack. BFS explores level by level using queue.
DFS: Stack/Recursion
BFS: Queue
Practice
FAANG
Important Problems
- Lowest Common Ancestor
- Path Sum
- Binary Tree Maximum Path Sum
- Level Order Traversal
Master Binary Trees and crack FAANG interviews 🚀
Explore More →