How to find the rank of an array in C#

Last Updated : 23 Jan, 2019

Array.Rank Property is used to get the rank of the Array. Rank is the number of dimensions of an array. For example, 1-D array returns 1, a 2-D array returns 2, and so on.

Syntax:

public int Rank { get; }

Property Value: It returns the rank (number of dimensions) of the Array of type System.Int32.

Below programs illustrate the use of above-discussed property:

Example 1:

// C# program to illustrate the 
// Array.Rank Property 
using System; 
namespace geeksforgeeks { 
  
class GFG { 
  
    // Main Method 
    public static void Main() 
    { 
  
        // declares a 1D Array of string. 
        string[] weekDays; 
  
        // allocating memory for days. 
        weekDays = new string[] {"Sun", "Mon", "Tue", "Wed", 
                                      "Thu", "Fri", "Sat" }; 
  
        // using Rank Property 
        Console.WriteLine("Dimension of weekDays array: " 
                                       + weekDays.Rank); 
    } 
} 
} 

Output:

Dimension of weekDays array: 1

Example 2:

// C# program to illustrate the 
// Array.Rank Property 
using System; 
namespace geeksforgeeks { 
  
class GFG { 
  
    // Main Method 
    public static void Main() 
    { 
  
        // declaring an 2-D array 
        int[, ] arr2d = new int[4, 2]; 
  
        // declaring an 3-D array 
        int[,, ] arr3d = new int[4, 2, 3]; 
  
        // declaring an jagged array 
        int[][] jdarr = new int[2][]; 
  
        // using Rank Property 
        Console.WriteLine("Dimension of arr2d array: " 
                                        + arr2d.Rank); 
  
        Console.WriteLine("Dimension of arr3d array: " 
                                        + arr3d.Rank); 
  
        // for the jagged array it  
        // will always return 1 
        Console.WriteLine("Dimension of jdarr array: " 
                                        + jdarr.Rank); 
    } 
} 
} 

Output:

Dimension of arr2d array: 2
Dimension of arr3d array: 3
Dimension of jdarr array: 1

Note:

A jagged array (an array of arrays) is a one-dimensional array so the value of its Rank property is 1.
Retrieving the value of this property is an O(1) operation.

Reference:

https://docs.microsoft.com/en-us/dotnet/api/system.array.rank?view=netframework-4.7.2

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How to find the rank of an array in C#

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