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Table of contents
1.
Introduction
2.
One-Dimensional Jagged Array
2.1.
Direct Method
2.2.
Short Hand Method
2.3.
Example
3.
Multi-Dimensional Jagged Array
3.1.
Example
4.
Frequently Asked Questions
4.1.
What is C#?
4.2.
What is an array?
4.3.
What is the syntax to create an array in C#?
4.4.
What are jagged arrays in C#?
4.5.
What are the applications of C#?
5.
Conclusion
Last Updated: Mar 27, 2024
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Jagged Arrays in C#

Author Shaurya Singhal
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23 Jul, 2024 @ 01:30 PM

Introduction

C# is a multi-paradigm, general programming language. C# was designed by Anders Hejlsberg in 2000. Later it was introduced by Microsoft along with the .NET framework and Visual Studio.

The array is nothing but a collection of elements of a similar data type. Each element stored in an array can be accessed easily using only the index of the element. 

A jagged array can be defined as a collection of two or more arrays of similar data types, such that each array in a Jagged array may or may not be of the same size. We can even add multi-dimensional arrays in Jagged arrays.

One-Dimensional Jagged Array

A one-dimensional jagged array is a collection of two or more one-dimensional arrays of the same data type. We can declare a jagged array using the following syntax,

Direct Method

int[][] jag_arr = new int[][] 
{
    new int[] {1, 5, 7, 9},
    new int[] {10, 25, 90},
    new int[] {15, 2},
    new int[] {1, 10, 5, 0, 50}
};

Short Hand Method

int[][] jag_arr = 
{
    new int[] {1, 5, 7, 9},
    new int[] {10, 25, 90},
    new int[] {15, 2},
    new int[] {1, 10, 5, 0, 50}
};

Example

Now, let us look at an example code of a one-dimensional jagged array. 

using System;
class JaggedArray {
public static void Main()
{   
    int[][] jag_arr = 
        {
            new int[] {1, 5, 7, 9},
            new int[] {10, 25, 90},
            new int[] {15, 2},
            new int[] {1, 10, 5, 0, 50}
        };  
for (int n = 0; n < jag_arr.Length; n++) {
System.Console.Write("Row({0}): ", n);
for (int k = 0; k < jag_arr[n].Length; k++) {
System.Console.Write("{0} ", jag_arr[n][k]);
}
System.Console.WriteLine();
}
}
}

 

In the above code, we created a jagged array using the shorthand method and then used a for loop to print all the elements present in the jagged array.

Also see, Introduction to C++

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Multi-Dimensional Jagged Array

We can also add multi-dimensional arrays to a jagged array. Let us look at the syntax to declare a multi-dimensional jagged array,

int[][, ] jag_arr = new int[4][, ] {
new int[, ] {{2, 4}, {1, 5}},
new int[, ] {{10, 20}, {15, 34}, {19, 13}},
new int[, ] {{11, 80}, {82, 98}, {11, 66}},
new int[, ] {{45, 73}, {71, 54}, {5, 19}}
};

In this code snippet, we have created a jagged array containing four multi-dimensional arrays.

Example

Let us look at an example of a multi-dimensional jagged array.

using System;
class MultiJaggedArray {
public static void Main(){
int[][, ] jag_arr = new int[4][, ] {
new int[, ] {{2, 4}, {1, 5}},
new int[, ] {{10, 20}, {15, 34}, {19, 13}},
new int[, ] {{11, 80}, {82, 98}, {11, 66}},
new int[, ] {{45, 73}, {71, 54}, {5, 19}}
};
for (int i = 0; i < jag_arr.Length; i++)
{
int x = 0;
for (int j = 0; j < jag_arr[i].GetLength(x); j++)
{
for (int k = 0; k < jag_arr[j].Rank; k++)
Console.Write("Jagged_Array[" + i + "][" + j + ", " + k + "]: "+ jag_arr[i][j, k] + " ");
Console.WriteLine();
}
x++;
Console.WriteLine();
}
}
}

 

In the above example, we have created a jagged containing four multi-dimensional arrays. We then used a for loop to print out all the elements present in the jagged array.

Must Read IEnumerable vs IQueryable, singleton design pattern in c#

Frequently Asked Questions

What is C#?

C# is a multi-paradigm, general programming language. C# was designed by Anders Hejlsberg in 2000. Later it was introduced by Microsoft along with the .NET framework and Visual Studio.

What is an array?

The array is nothing but a collection of elements of a similar data type. Each element stored in an array can be accessed easily using only the index of the element.

What is the syntax to create an array in C#?

Arrays can be created using the following syntax in the C and C++ programming languages,

data_type[][] name_of_array = new data_type[rows][]

What are jagged arrays in C#?

A jagged array can be defined as a collection of two or more arrays of similar data types, such that each array in a Jagged array may or may not be of the same size. We can even add multi-dimensional arrays in Jagged arrays.

What are the applications of C#?

C# has a wide range of applications. It is used for Web development, Application Development, and Game Development.

Conclusion

This blog covered all the necessary points associated with the jagged arrays in C#. We further looked at various methods of declaration of the jagged arrays and also looked at a few examples of the jagged arrays in C#.

Do check out our blogs on object-oriented programming and data structures

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