Trees
Trees are hierarchical data structures. Binary trees and Binary Search Trees (BSTs) are fundamental variants that test recursion, traversal, and property validation.
A traversal technique that explores tree nodes level by level, using a queue. It is ideal for finding the shortest path on unweighted graphs or trees.
Example Problems:
Binary Tree Level Order TraversalBinary Tree Zigzag Level Order TraversalMinimum Depth of Binary Tree
Solution Spotlight: Binary Tree Level Order Traversal (BFS)
This BFS solution uses a queue to process nodes level by level. The key is capturing the queue size at the start of each level to ensure the inner loop only processes nodes belonging to that specific level.
BinaryTreeLevelOrderTraversal(BFS).java
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