Since List is derived from Collection, it can use different implementations one of these implementations is ArrayList, a class that implements the List’s behaviour using arrays as a data structure. And this is because of the way these data structures are stored in memory. The array allows both kinds of access, direct and sequential, while List only allows sequential access. An array is always a list in nature, but a list is not an array. It all depends upon the use case and requirement. If frequent insertion and deletion occur, and at the same time, memory is not a constraint, then List is an ideal choice, whereas in scenarios like frequent access of elements of required with a memory constraint, then Array is a better option. Type safety feature means there is no boxing or unboxing, which would enhance performance, and if anyone attempts to add an element of the wrong type, it will generate a compile-time error.Ĭ# List vs Array performance is a linear data structure that is well suited for different scenarios. It is essentially a type-safe version of an ArrayList data structure. Unlike Array, they are dynamic in nature, can resize automatically with frequent insertion and deletion of elements. The list provides more generic capabilities and derived from Collection APIs. Also, Array supports multiple dimensions. Thus, it is a type-safe and most efficient linear data structure in terms of speed and performance. An Array is fixed in size, and once it is allocated, one cannot add or remove items from it also, all elements must be of the same type. The storing capabilities and design of both data structures make them unique in their own ways. Index based with the lowest address as first, and highest address as lastĪccess element is time-consuming although based on the position of an element.Īccess element is a constant time operation irrespective of element location.īoth C# List vs Array are distinct types, having different capabilities and store their data in separate ways. The original data structure, based on the index concept List leverage generics is basically a type-safe version of ArrayList and generates a compile-time error, whereas Arrays, with its type-safe, highly efficient in terms of speed and performance, supports multiple dimensions.īelow is the topmost comparison Basis Of Comparison.The non-contiguous property of List makes them take more time in accessing the elements, whereas the contiguous property of Array makes them highly efficient for accessing the elements.The list contains nodes that have memory locations that need not be contiguous in nature, whereas Array contains the elements with their memory location, which are contiguous in nature.A list is derived from Collection, which contains a more generic data type, whereas Array is fixed and store a more strong data type.List occupies much more memory as every node defined the List has its own memory set whereas Arrays are memory-efficient data structure.The list is better for frequent insertion and deletion, whereas Arrays are much better suited for frequent access of elements scenario.their size automatically increases with more element insertion, whereas Arrays are the fixed-size structure, once initialized, cannot be reset. A list is not index-based, based on the concept of nodes, whereas Arrays are index-based data structures with the lowest address is provided to the first element, and the highest address is provided to the last element in the array.
Key Differences between C# List and Arrayīoth are popular choices in the market let us discuss some of the major differences: All arrays consist of contiguous memory locations, with the lowest address corresponds to the first element and the highest address to the last element.īelow are the top 8 differences between C# List vs Array
It is used to store a data collection, but the array can be considered a collection of variables of the same type stored at contiguous memory locations. Head To Head Comparison Between C# List and Array (Infographics)Īn array stores a fixed-size sequential collection of elements of the same type. Int steps = new int Ĭopy an array variable into another target array variable:īoth target and source point to the same memory location. Console.WriteLine (“element is : ”+ value) Ĭreate and initialize an array at the same time:
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