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Notes
Binary Search Trees

A BST is a node-based binary tree where:

- Left subtree < parent

- Right subtree > parent

LaTeX
T(n) = 2T(n/2) + O(n)
Editorbst.py
class Node:
def __init__(self, val):
self.val = val
self.left = None
self.right = None
def insert(root, val):
if root is None:
return Node(val)
> Running bst.py...
Inserted: 5, 3, 7, 1, 4
In-order: [1, 3, 4, 5, 7]
Research
Video Player
BST Tutorial - Part 3
12:34 / 45:00
Quick Notes
Time complexity for search is O(log n) on average, O(n) worst case.

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Updated: Feb 2026