Linked List Operations Overview

Core linked-list operations are listed below with a short meaning for each. These are the basic actions used in most LL problems.

Operation	Small description
Create	Allocate a new node dynamically and initialize its fields.
Traverse	Visit nodes from `head` to `NULL` (or back to start in circular lists).
Insert	Add a node at beginning, end, or any valid position by changing links.
Delete	Remove a node from beginning, end, or position and reconnect pointers safely.
Search	Scan nodes to find a target value/key and return node or position.
Update	Modify data stored in an existing node after locating it.
Count / Length	Compute number of nodes currently present in the list.
Reverse	Flip links so traversal order becomes opposite.
Merge	Combine two linked lists into one list (often sorted merge).