What are the advantages and disadvantages of arrays in c sharp?

Answer 1

Advantages:

1. Can store "n" number of same data types in different indexes

2. Can be accesses using reference.

Disadvantage:

1. No boundary check, if the array boundary is crossed run time

2. No facility to increase the size of array in Run time

Answer 2

The only advantage I can think of using an array (a collection that with a fixed size) is the initialization of each element in that array is set to the default value when the array is created (allocated), while a List (or a collection) with size can change does not get initialized to the default value even you set an initial size to it.

For example:

int[] array = new int[20]; // all 20 elements are 0, the default value of int

Exception[] errorArray = new Exception[10]; // all 10 elements are null

List<int> integerList = new List<int>(20); //cannot access to integerList[0] unless integer[0] has been explicitly assigned with a value, or integerList.Add() has been called at least once without being cleared

The disadvantage of using an array is the objects are being referenced/stored within, which may not easily being cleared, especially for those reference types.