Week 26 of 43
Advanced DSA
WEEK 26 LEARNING MODULE
Tree Data Structures & Tree Traversals
Opens Phase 2 (Advanced DSA) with hierarchical tree structures, binary trees, depth/height properties, DFS traversals (Pre-order, In-order, Post-order), and BFS level-order.
4 Practice Problems3 Core ConceptsVerified Curriculum: high Confidence
What You'll Learn
- ✓Master hierarchical tree definitions: Root, Node, Edge, Leaf, Depth, Height, Subtree.
- ✓Understand Binary Tree classifications: Full, Complete, Perfect, Degenerate.
- ✓Implement recursive and iterative DFS tree traversals: Pre-order, In-order, Post-order.
- ✓Implement BFS Level-order tree traversal using a FIFO queue.
- ✓Compute maximum tree depth and evaluate symmetric / inverted trees.
Core Concepts
Hierarchical Tree Terminology
Non-linear acyclic connected graph structure with a unique root node.
Depth-First Tree Traversals
O(n) time, O(h) spacePre-order (Root, L, R), In-order (L, Root, R), and Post-order (L, R, Root) traversals.
Level-Order Tree Traversal (BFS)
O(n) time, O(w) space where w is max widthVisiting nodes layer-by-layer using a FIFO queue.
Algorithms Covered
Pre-order TraversalIn-order TraversalPost-order TraversalMax Tree Depth CalculationTree InversionSymmetry Verification
Data Structures Applied
Binary TreesQueuesStacks
Lecture Materials (1)
Official Slide Deck1.2 MB
In Transit
Trees_I.pdf
Topic: Trees I
Format: PDF