C# | Set the bit at a specific position in the BitArray to the specified value
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.Set(Int32, Boolean) method is used to set the bit at a specific position in the BitArray to the specified value.
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 void Set (int index, bool value);
Parameters:
index : The zero-based index of the bit to set.
value : The Boolean value to assign to the bit.
Exception: This method will give ArgumentOutOfRangeException if the index is less than zero or the index is greater than or equal to the number of elements in the BitArray.
Note: This method is an O(1) operation.
Below programs illustrate the use of BitArray.Set(Int32, Boolean) Method:
Example 1:
using System;
using System.Collections;
class GFG {
public static void Main()
{
BitArray myBitArr = new BitArray(5, false );
Console.WriteLine( "Initially the bits are as : " );
PrintIndexAndValues(myBitArr);
myBitArr.Set(3, true );
Console.WriteLine( "Finally the bits are as : " );
PrintIndexAndValues(myBitArr);
}
public static void PrintIndexAndValues(IEnumerable myArr)
{
foreach (Object obj in myArr)
{
Console.WriteLine(obj);
}
}
}
|
Output:
Initially the bits are as :
False
False
False
False
False
Finally the bits are as :
False
False
False
True
False
Example 2:
using System;
using System.Collections;
class GFG {
public static void Main()
{
BitArray myBitArr = new BitArray(5);
myBitArr[0] = false ;
myBitArr[1] = true ;
myBitArr[2] = true ;
myBitArr[3] = false ;
myBitArr[4] = true ;
Console.WriteLine( "Initially the bits are as : " );
PrintIndexAndValues(myBitArr);
myBitArr.Set(2, false );
myBitArr.Set(3, true );
Console.WriteLine( "Finally the bits are as : " );
PrintIndexAndValues(myBitArr);
}
public static void PrintIndexAndValues(IEnumerable myArr)
{
foreach (Object obj in myArr)
{
Console.WriteLine(obj);
}
}
}
|
Output:
Initially the bits are as :
False
True
True
False
True
Finally the bits are as :
False
True
False
True
True
Reference:
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