🌲 Trees Explained Like You're 5

A family tree with parent and children

Day 36 of 149

👉 Full deep-dive with code examples

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The Family Tree

        Grandma
       /       \
     Mom       Uncle
    /   \        |
  You  Sister   Cousin

Each person has a "parent" and maybe "children."

Computer trees work exactly like family trees!

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In Code

       CEO
      /    \
    CTO    CFO
   /   \     \
 Dev1  Dev2   Accountant

• CEO is the root (top)
• CTO and CFO are children of CEO
• Dev1 and Dev2 are leaves (no children)

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Why Use Trees?

Fast searching!

Binary Search Tree:

• Every left child is smaller
• Every right child is bigger

       5
      / \
     3   7
    / \   \
   1   4   9

To find 4: Go right of 3, done! Didn't check every node.

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Real Uses

• File systems (folders contain folders)
• HTML (elements contain elements)
• Decision trees in AI

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In One Sentence

Trees organize data in a hierarchy of parent-child relationships, like a family tree or folder structure.

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