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Programming Concepts Beginner

What is Linked List?

A linear data structure where elements are stored in nodes, each containing data and a pointer to the next node in the sequence.

Linked lists provide O(1) insertion and deletion at known positions (no shifting needed), but O(n) access by index (must traverse from head). Types include singly linked (forward pointers), doubly linked (forward and backward), and circular.

Use cases include implementing stacks, queues, and hash table collision chains. In practice, arrays/vectors are often faster due to cache locality. Linked lists are fundamental to understanding pointers, memory allocation, and data structure design.

Related Terms

Closure
A function that captures and retains access to variables from its enclosing scope, even after that scope has finished executing.
Stack
A data structure that follows Last-In-First-Out (LIFO) ordering, where elements are added and removed from the same end (top).
Object-Oriented Programming (OOP)
A programming paradigm that organizes software design around objects containing data and behavior.
Singleton Pattern
A design pattern that restricts a class to a single instance and provides a global point of access to that instance.
Data Structure
A way of organizing and storing data in a computer so it can be accessed and modified efficiently.
Binary Search
An efficient search algorithm that finds a target value in a sorted array by repeatedly dividing the search interval in half.
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