Can I apply a macro that sorts within individual cells to a selection of cells at once?

[Colleen1213]

Hello!
I'm pretty new to VBA so please excuse me. I am working with an established macro to sort data within a cell. However, I currently have to select the cell and run the macro on about 200 cells individually, which is very time consuming. Is there a way to modify this code (or use a completely different one) so that I can just highlight all of the cells and apply the sort macro once to all highlighed cells? Any help or suggestions are much appreciated! My existing code is below.
Thank you all

Option Explicit

Public Sub SortVals()
    Dim i As Integer
    Dim arr As Variant
    arr = Split(ActiveCell.Text, ",")

    ' trim values so sort will work properly
    For i = LBound(arr) To UBound(arr)
        arr(i) = Trim(arr(i))
    Next i

    ' sort
    QuickSort arr, LBound(arr), UBound(arr)

    ' load sorted values back to cell
    Dim comma As String
    comma = ""
    ActiveCell = ""
    For i = LBound(arr) To UBound(arr)
        ActiveCell = ActiveCell & comma & CStr(arr(i))
        comma = ","
    Next i
End Sub

Public Sub QuickSort(vArray As Variant, inLow As Long, inHi As Long)

  Dim pivot   As Variant
  Dim tmpSwap As Variant
  Dim tmpLow  As Long
  Dim tmpHi   As Long

  tmpLow = inLow
  tmpHi = inHi

  pivot = vArray((inLow + inHi) \ 2)

  While (tmpLow <= tmpHi)

     While (vArray(tmpLow) < pivot And tmpLow < inHi)
        tmpLow = tmpLow + 1
     Wend

     While (pivot < vArray(tmpHi) And tmpHi > inLow)
        tmpHi = tmpHi - 1
     Wend

     If (tmpLow <= tmpHi) Then
        tmpSwap = vArray(tmpLow)
        vArray(tmpLow) = vArray(tmpHi)
        vArray(tmpHi) = tmpSwap
        tmpLow = tmpLow + 1
        tmpHi = tmpHi - 1
     End If

  Wend

  If (inLow < tmpHi) Then QuickSort vArray, inLow, tmpHi
  If (tmpLow < inHi) Then QuickSort vArray, tmpLow, inHi

End Sub