What is the difference between a List and a LinkedList in C#?

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Aryan Kumar · Answer

List and LinkedList are two common collection types in C# that store and manage a sequence of elements. They have different characteristics and are suited for different scenarios. Here's a comparison of List and LinkedList in C#:
List:
Data Structure:
List is implemented as a dynamic array. It provides an ordered collection of elements, and elements are stored in contiguous memory locations.Elements can be accessed by their index, which allows for fast random access.
Performance:
Lists are efficient for most common operations such as adding, accessing, and removing elements.Adding or removing elements at the end of a List is very efficient because it doesn't require extensive copying of elements.
Use Cases:
Lists are well-suited for scenarios where you need to access elements frequently and perform various operations on the collection.They are the go-to choice for general-purpose collections and are used in a wide range of scenarios, including lists, stacks, queues, and more.
Memory Overhead:
Lists have a bit more memory overhead due to the need to allocate a contiguous block of memory. This may result in less efficient memory usage for small collections.
LinkedList:
Data Structure:
LinkedList is implemented as a doubly linked list. It consists of nodes where each node contains a value and two references: one to the previous node and one to the next node.Elements are not stored in contiguous memory locations but are linked to their neighbors.
Performance:
LinkedLists are efficient when it comes to adding or removing elements in the middle of the collection because updating references is relatively quick.However, they are less efficient than Lists when it comes to random access (i.e., accessing elements by index) because you must traverse the list from the beginning to reach a specific element.
Use Cases:
LinkedLists are suitable for scenarios where you frequently need to insert or remove elements in the middle of the collection, and random access is not a primary concern.They are used in scenarios such as implementing certain data structures (e.g., linked lists) and for specific algorithms and operations where element reordering is common.
Memory Overhead:
LinkedLists have less memory overhead per element since they only need to store the data and references to the previous and next nodes. This can make them more memory-efficient for small collections.
Common Characteristics:
Both List and LinkedList provide methods to manipulate and access elements, including adding, removing, and iterating through the collection.They both allow duplicates and can store elements of various data types.The choice between List and LinkedList depends on the specific requirements of your application or problem. You should consider factors such as the type and frequency of operations you'll perform on the collection.
In summary, List is efficient for random access and is suitable for general-purpose collections, while LinkedList is more efficient for frequent insertions and removals in the middle of the collection. The choice between them depends on the specific needs of your program.

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What is the difference between a List and a LinkedList in C#?

Revati S Misra

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