Definition
Level order traversal uses a queue to visit nodes at the same depth from left to right.
Key Characteristics
- ✓Breadth-First Search (BFS) approach
- ✓FIFO queue ensures level order
- ✓Visit same-level nodes in order
Use Cases
Used in these scenarios:
🛤️
Shortest Path
Find shortest path in unweighted graph
📊
Level Processing
Process nodes level by level
💾
Tree Serialization
Serialize tree in level order
Complexity
Time Complexity
Best
O(N)
Average
O(N)
Worst
O(N)
Space Complexity
O(N)
Understand Deeper with Visualization
See how the algorithm works through step-by-step animations and code execution.
Start Visualization