How to find the length of the longest consecutive zeroes in the binary representation of a number in VB.NET

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Imports System

Module LongestZeroes

    ' Function to find the longest sequence of consecutive zeroes in binary representation
    Function LongestConsecutiveZeroes(ByVal n As Integer) As Integer
        Dim maxCount As Integer = 0
        Dim currentCount As Integer = 0

        While n > 0
            If (n And 1) = 0 Then ' Check if the least significant bit is 0
                currentCount += 1
                maxCount = Math.Max(maxCount, currentCount) ' Update maxCount
            Else
                currentCount = 0 ' Reset count when a 1 is encountered
            End If

            n >>= 1 ' Right shift the number
        End While

        Return maxCount
    End Function

    Sub Main()
        Dim num As Integer = 11298 ' 0010 1100 0010 0010

        Console.WriteLine("Longest consecutive zeroes: " & LongestConsecutiveZeroes(num))
    End Sub

End Module



' run:
' 
' Longest consecutive zeroes: 4
'

 



answered Sep 14, 2025 by avibootz
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