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                               Arrays in C#

Arrays in C# are used to store collections of elements of the same data type. C# supports single-dimensional arrays, multidimensional arrays, and jagged arrays.

1. Single-Dimensional Array:

A single-dimensional array is a collection of elements stored in a linear sequence. It is declared with a specified data type, followed by square brackets []:

int[] numbers = new int[5]; // Declare an integer array of size 5

You can initialize and access elements like this:

numbers[0] = 1; numbers[1] = 2; // ... int thirdElement = numbers[2];

2. Multidimensional Array:

A multidimensional array is an array of arrays. Commonly used are two-dimensional arrays, but you can have arrays with more dimensions.

Two-Dimensional Array:

int[,] matrix = new int[3, 4]; // Declare a 2D array of size 3x4

You can initialize and access elements as follows:

matrix[0, 0] = 1; matrix[0, 1] = 2; // ... int value = matrix[1, 2];

Three-Dimensional Array:

int[,,] cube = new int[2, 3, 4]; // Declare a 3D array of size 2x3x4

3. Jagged Array:

A jagged array is an array of arrays where each element can be an array of different sizes.

int[][] jaggedArray = new int[3][];

You need to initialize each sub-array separately:

jaggedArray[0] = new int[] { 1, 2, 3 }; jaggedArray[1] = new int[] { 4, 5 }; jaggedArray[2] = new int[] { 6, 7, 8, 9 };

Accessing elements:

int value = jaggedArray[1][0]; // Accessing the first element of the second sub-array

Jagged arrays are flexible and allow different lengths for each row.

Arrays in C# are zero-indexed, meaning the first element is at index 0, the second at index 1, and so on. Array elements are accessed using square brackets [].