What are the differences between List and an array in C#? Arrays

Hello Kiran, Here are key differences between both, Size Arrays have a fixed size Lists resize automatically. Namespace Arrays are built-in Lists need System.Collections.Generic. Performance Arrays are slightly faster due to no resizing overhead. Features Arrays offer basic functionality Lists provide rich helper methods. Memory Arrays allocate memory upfront Lists grow as needed. Initialization Arrays use new T[size] Lists use collection initializers. Use Case Arrays are ideal for fixed data Lists suit dynamic or unknown sizes. LINQ Support Arrays support LINQ with conversion Lists support LINQ directly.

In C#, both List and arrays are used to store collections of elements, Array : Fixed size. Once created, its size cannot be changed. int[] numbers = new int[5]; // Fixed size List : Dynamic size. It can grow or shrink as needed using methods like Add() , Remove() , etc. List numbers = new List(); // Dynamic size