This document summarizes different types of arrays in C#: - There are three types of arrays - single dimensional, multidimensional, and jagged arrays. Single dimensional arrays store elements in a single list, multidimensional arrays store them in a table-like format, and jagged arrays can store elements of different sizes. - Single dimensional arrays are created using square brackets after the type. Multidimensional arrays use commas inside the brackets to specify multiple dimensions. Jagged arrays are arrays of arrays that can have elements of varying sizes. - The document provides examples of declaring, initializing, and filling values in each type of array.

1. C# Tutorial
Part 7:
Arrays
www.sirykt.blogspot.com

2. • Like other programming languages, array in C# is a group of similar types
of elements that have contiguous memory location.
• In C#, array is an object of base type System.Array. In C#, array index
starts from 0. We can store only fixed set of elements in C# array.
• Advantages of C# Array
• Code Optimization (less code)
• Random Access
• Easy to traverse data
• Easy to manipulate data
• Easy to sort data etc.
• Disadvantages of C# Array
• Fixed size
• C# Array Types
• There are 3 types of arrays in C# programming:
• Single Dimensional Array
• Multidimensional Array
• Jagged Array

3. • C# Single Dimensional Array
• To create single dimensional array, you need to use square brackets
[] after the type.
• int[] arr = new int[5];//creating array
• You cannot place square brackets after the identifier.
• int arr[] = new int[5];//compile time error
• C# Multidimensional Arrays
• The multidimensional array is also known as rectangular arrays in
C#. It can be two dimensional or three dimensional. The data is
stored in tabular form (row * column) which is also known as matrix.
• To create multidimensional array, we need to use comma inside the
square brackets. For example:
• int[,] arr=new int[3,3];//declaration of 2D array
• int[,,] arr=new int[3,3,3];//declaration of 3D array

4. • C# Jagged Arrays
• In C#, jagged array is also known as "array of arrays" because its
elements are arrays. The element size of jagged array can be different.
• Declaration of Jagged array
• Let's see an example to declare jagged array that has two elements.
• int[][] arr = new int[2][];
• Initialization of Jagged array
• Let's see an example to initialize jagged array. The size of elements can
be different.
• arr[0] = new int[4];
• arr[1] = new int[6];
• Initialization and filling elements in Jagged array
• Let's see an example to initialize and fill elements in jagged array.
• arr[0] = new int[4] { 11, 21, 56, 78 };
• arr[1] = new int[6] { 42, 61, 37, 41, 59, 63 };
• Here, size of elements in jagged array is optional. So, you can write above
code as given below:
• arr[0] = new int[] { 11, 21, 56, 78 };

5. SIRYKT
Sharing Knowledge is Learning

6. For more updates
For more visit our website www.sirykt.blogspot.com