C# | Get or set the number of elements in the BitArray (original) (raw)

Last Updated : 01 Feb, 2019

The BitArray class manages a compact array of bit values, which are represented as Booleans, where true indicates that the bit is on i.e, 1 and false indicates the bit is off i.e, 0. This class is contained in System.Collections namespace. BitArray.Length property is used to get or set the number of elements in the BitArray. Properties:

• The BitArray class is a collection class in which the capacity is always the same as the count.
• Elements are added to a BitArray by increasing the Length property.
• Elements are deleted by decreasing the Length property.
• Elements in this collection can be accessed using an integer index. Indexes in this collection are zero-based.

Syntax:

public int Length { get; set; }

Return Value: The number of elements in the BitArray.Exception: This method will give ArgumentOutOfRangeException if the property is set to a value which is less than zero. Below programs illustrate the use of BitArray.Length Property: Example 1:

CSHARP `

// C# code to get or set the // number of elements in the BitArray using System; using System.Collections;

class GFG {

// Driver code
public static void Main()
{

    // Creating a BitArray myBitArr
    BitArray myBitArr = new BitArray(new byte[] { 0, 0, 0, 1 });

    // Displaying the number of
    // elements in myBitArr
    Console.WriteLine(myBitArr.Length);
}

}

`

Example 2:

CSHARP `

// C# code to get or set the // number of elements in the BitArray using System; using System.Collections;

class GFG {

// Driver code
public static void Main()
{

    // Creating a BitArray myBitArr
    BitArray myBitArr = new BitArray(new byte[] {});

    // Displaying the number of
    // elements in myBitArr
    Console.WriteLine(myBitArr.Length);
}

}

`

Note:

• Length and Count return the same value. Length can be set to a specific value, but Count is read-only.
• If Length is set to a value that is less than Count, the BitArray is truncated and the elements after the index value -1 are deleted.
• If Length is set to a value that is greater than Count, the new elements are set to false.
• Retrieving the value of this property is an O(1) operation. Setting this property is an O(n) operation.

Reference:

• https://docs.microsoft.com/en-us/dotnet/api/system.collections.bitarray.length?view=netframework-4.7.2

Similar Reads

• C# | Get or set the number of elements that the ArrayList can contain ArrayList represents an ordered collection of an object that can be indexed individually. It is basically an alternative to an array. It also allows dynamic memory allocation, adding, searching and sorting items in the list. ArrayList.Capacity property is used to get or set the number of elements th 2 min read
• C# | Total number of elements present in an array Array.GetLength(Int32) Method is used to find the total number of elements present in the specified dimension of the Array. Syntax: public int GetLength (int dimension); Here, dimension is a zero-based dimension of the Array whose length needs to be determined.Return value: The return type of this m 2 min read
• C# | Number of elements contained in the BitArray The BitArray class manages a compact array of bit values, which are represented as Booleans, where true indicates that the bit is on i.e, 1 and false indicates the bit is off i.e, 0. This class is contained in System.Collections namespace. BitArray.Count property is used to get the number of element 2 min read
• C# | Get the number of elements actually contained in the ArrayList ArrayList represents an ordered collection of an object that can be indexed individually. It is basically an alternative to an array. It also allows dynamic memory allocation, adding, searching and sorting items in the list. ArrayList.Count property gets the number of elements actually contained in 3 min read
• C# | Count the total number of elements in the List List class represents the list of objects which can be accessed by index. It comes under the System.Collection.Generic namespace. List class can be used to create a collection of different types like integers, strings etc. List class also provides the methods to search, sort, and manipulate lists. L 2 min read
• BitArray.LeftShift() Method in C# with Examples BitArray class manages a array of bit values, which are represented as Booleans, where true indicates bit is 1 and false indicates bit is 0. This class is contained in namespace, System.Collections. BitArray.LeftShift(Int32) method is used to shift the bits of the bit array to the left by one positi 2 min read
• C# | Bitwise exclusive OR operation between the elements of BitArray The BitArray class manages a compact array of bit values, which are represented as Booleans, where true indicates that the bit is on i.e, 1 and false indicates the bit is off i.e, 0. This class is contained in System.Collections namespace. BitArray.Xor(BitArray) method is used to perform the bitwise 3 min read
• BitArray.RightShift() Method in C# with Examples BitArray class manages a array of bit values, which are represented as Booleans, where true indicates bit is 1 and false indicates bit is 0. This class is contained in namespace, System.Collections. BitArray.RightShift(Int32) method is used to shift the bits of the bit array to the right by one posi 2 min read
• C# | Enumerator that iterates through the BitArray The BitArray class manages a compact array of bit values, which are represented as Booleans, where true indicates that the bit is on i.e, 1 and false indicates the bit is off i.e, 0. This class is contained in System.Collections namespace. BitArray.GetEnumerator method is used to get an enumerator w 3 min read
• C# | Bitwise OR operation between the elements of BitArray The BitArray class manages a compact array of bit values, which are represented as Booleans, where true indicates that the bit is on i.e, 1 and false indicates the bit is off i.e, 0. This class is contained in System.Collections namespace. BitArray.Or(BitArray) method is used to perform the bitwise 3 min read