concatenate cells when there are duplicates without using Transpose - excel

Question

I am using the following code - thanks #bonCodigo
Sub groupConcat()
Dim dc As Object
Dim inputArray As Variant
Dim i As Integer
Set dc = CreateObject("Scripting.Dictionary")
inputArray = WorksheetFunction.Transpose(Sheets(1).Range("A2:B7").Value)
'-- assuming you only have two columns - otherwise you need two loops
For i = LBound(inputArray, 2) To UBound(inputArray, 2)
If Not dc.Exists(inputArray(1, i)) Then
dc.Add inputArray(1, i), inputArray(2, i)
Else
dc.Item(inputArray(1, i)) = dc.Item(inputArray(1, i)) _
& "; " & inputArray(2, i)
End If
Next i
'--output into sheet
Sheets(1).Range("D2").Resize(UBound(dc.keys) + 1) = _
Application.Transpose(dc.keys)
Sheets(1).Range("E2").Resize(UBound(dc.items) + 1) = _
Application.Transpose(dc.items)
Set dc = Nothing
End Sub
A very elegant solution. Unfortunately, I am running into the limitation of using Transpose method. I have long strings that I would like to concatenate using the above code.
Any help will be appreciated.
Regards

Answer 1

This also uses a variant array but without the `Transpose`. It will ignore blank values to boot.
It runs by column, then by row
Sub Bagshaw()
Dim allPosts As Variant
Dim allPosts2 As Variant
Dim lngRow As Long
Dim lngCol As Long
Dim lngCnt As Long
Dim objDic As Object
Set objDic = CreateObject("Scripting.Dictionary")
allPosts = Range("A2:B5000").Value2
ReDim allPosts2(1 To UBound(allPosts, 1) * UBound(allPosts, 2), 1 To 1)
For lngCol = 1 To UBound(allPosts, 2)
For lngRow = 1 To UBound(allPosts, 1)
If Not objDic.exists(allPosts(lngRow, lngCol)) Then
If Len(allPosts(lngRow, lngCol)) > 0 Then
objDic.Add allPosts(lngRow, lngCol), 1
lngCnt = lngCnt + 1
allPosts2(lngCnt, 1) = allPosts(lngRow, lngCol)
End If
End If
Next
Next
Range("D2").Resize(UBound(allPosts2, 1)).Value2 = allPosts2
End Sub

Answer 2

Sub groupConcat()
Dim r As Range
Dim ro As Range
Dim myr As Range
Dim vcompt As Integer
vcompt = 0
Set ro = Range(Range("A2"), Range("A2").End(xlDown))
For i = Range("A2").Row To Range("A2").End(xlDown).Row
Debug.Print Range("A" & i).Address
Set myr = ro.Find(what:=Range("A" & i).Value, after:=Range("A2").End(xlDown), Lookat:=xlWhole, SearchDirection:=xlNext)
If myr Is Nothing Or myr.Address = Range("A" & i).Address Then
mystr = Range("A" & i).Offset(0, 1).Value
Set r = Range(Range("A" & i), Range("A2").End(xlDown))
Set myr = r.Find(what:=Range("A" & i).Value, Lookat:=xlWhole, SearchDirection:=xlNext)
If Not myr Is Nothing And r.Address <> Range("A2").End(xlDown).Address Then
Do While myr.Address <> Range("A" & i).Address
Debug.Print "r: " & r.Address
Debug.Print "myr: " & myr.Address
mystr = mystr & "; " & myr.Offset(0, 1).Value
Set myr = r.FindNext(myr)
Loop
End If
Range("D" & 2 + vcompt).Value = Range("A" & i).Value
Range("D" & 2 + vcompt).Offset(0, 1).Value = mystr
vcompt = vcompt + 1
End If
Next i
End Sub