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"Not just for forests. Trees are the non-linear backbone of every file system, search engine, and the very browser you're using."
"Master the terminology that interviewers crave."
Hover a node to analyze its memory footprint and structural properties.
"A tree with N nodes will always have exactly N-1 edges."
"In a strict binary tree, if L is leaves and I is nodes with 2 children..."
"Max nodes in a binary tree of height H is bounded."
Assuming Root Height = 0
"Every HTML page is a tree. Browsers use tree traversal to render styles and find elements."
"Folders are internal nodes, files are leaf nodes. Pathfinding is tree navigation."
"AI and machine learning use Decision Trees to categorize complex data inputs."
**Height vs Depth** is the most common confusion in interview scenarios.
Calculated **Bottom-Up**. Leaves start at 0. Root is max.
Calculated **Top-Down**. Root starts at 0. Leaves are max.