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Data Structures /
Binary Search Trees
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A tree is the structure with nodes and links.
A binary tree is a tree where each node has 0-2 children.
A BST is a binary tree with constrains.
Left node has descendants less than the node.
Right node has descendants greater than the node.

What is a tree?
What is a binary tree?
What is a binary search tree (BST)?
What are the constrains for descendants in a BST?