Binary Search Tree Removals - Delete Nodes with 0, 1, or 2 Children

Hello there. In this video we break down exactly how to delete nodes from a binary search tree. We cover all three cases step by step: deleting a leaf node with zero children, deleting a node with one child by promoting it, and the trickiest case - deleting a node with two children using the in-order successor method.

You'll see clear diagram walkthroughs, pointer manipulation explanations, and time complexity discussion for each type of removal. Perfect for computer science students, coding interview prep, or anyone strengthening their data structures knowledge.

We search for the node, identify its children, and handle the reconnection properly to maintain the BST properties. Includes examples for each scenario and tips for implementing in code.

If you're learning BST insert, search, and now removal, this completes the core operations.

00:00 Introduction to BST Deletions
00:10 BST Review and Setup
00:46 Three Types of Deletions
00:56 Deleting a Leaf Node (Zero Children)
03:21 Pointer Manipulation for Leaf Deletion
05:25 Deleting a Node with One Child
07:17 Pointer Updates for One Child Deletion
10:09 Deleting a Node with Two Children
12:08 In-Order Traversal and Successor Concept
13:18 Finding In-Order Successor
14:20 Copying Successor Value and Recursive Delete
18:28 Deleting the Root Node Example
22:56 Additional One Child Successor Example
25:12 Time Complexity Summary
26:08 Closing and Outro

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