CountFileCharacters – Counting how many characters of a given type are in a file

CountFileCharacters – Counting how many characters of a given type are in a file

' Count how many characters of a given type are in a file' Example:'    Dim charCount(255) As Integer'    CountFileCharacters("c:	est.txt", charCount)'    Debug.WriteLine("the char 'A' was found " & charCount(Asc("A")) & " times")'    Debug.WriteLine("the char 'a' was found " & charCount(Asc("a")) & " times")Sub CountFileCharacters(ByVal filePath As String, ByVal charCount() As Integer)    Dim i As Integer, acode As Integer    Dim fs As System.IO.FileStream    Dim fileLength As Integer = New System.IO.FileInfo(filePath).Length    Dim content(fileLength - 1) As Byte    Try        ' read the file contents in a temporary Byte array        fs = New System.IO.FileStream(filePath, IO.FileMode.Open)        fs.Read(content, 0, fs.Length)    Finally        If Not fs Is Nothing Then fs.Close()    End Try    ' parse the array, update charCount()    For i = 0 To content.GetUpperBound(0)        acode = content(i)        charCount(acode) = charCount(acode) + 1    Next iEnd Sub

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