Array to Excel Range - vba

Question

I'm new to VBA and trying to write an array to an excel range through an array UDF.
I'm trying to output the array to a maximum number of rows that the formula was placed in. I am using the Microsoft Scripting Library for the dictionary, if that matters.
With an array formula in excel (CTRL+Shift+Enter), how do I resize my array to the range that the formula was placed in and then place the array in the cells?
I would like the formula on the cells to be =test("G1:J20") and the formula will be placed in the cells A1:B20.
Code:
Function test(ByVal inputRange As Range) As Variant
Dim Cell As Variant
Dim D As Dictionary
Dim Arr() As Variant
Dim i As Long
Set D = New Dictionary
' Remove duplicates
For Each Cell In inputRange
If D.Exists(CStr(Cell.Value)) = False Then
D.Add CStr(Cell.Value), 1
Else
D.Exists (Cell.Value)
D.Item(Cell.Value) = D.Item(Cell.Value) + 1
End If
Next
D.Remove vbNullString
Redim Arr(0 To Application.Max(D.Count, Application.Caller.Cells.Count))
'Fill the array with the keys from the Dictionary
For i = 0 To D.Count - 1
Arr(i) = D.Keys(i)
Next i
test = Application.Transpose(Arr)
End Function

Answer 1

To read and write arrays to cells you need a 2D array. For example:
Dim data() as Variant, N as Long, M as Long
' Say you want a 100×50 array
N = 100 : M = 50
ReDim data(1 to N, 1 to M)
' Fill data()
Range("A1").Resize(N,M).Value = data
Or to just read values
Dim data() as Variant, N as Long, M as Long, i as Long, j as Long
data = Range("A1:AX100").Value
N = UBOUND(data,1) : M = UBOUND(data,2)
For i = 1 to N
For j = 1 to M
Debug.Print(data(i,j))
Next j
Next i
Edit 1 I got rid of the evil Integer types and replaced them with Long, the native 32-bit integers in VBA.

Answer 2

Here is a method to put an array into a worksheet range, is this what you meant?
Sub test()
Dim v(0 To 2, 0 To 2) As Variant
Dim r As Range
'fill the array with values
populate v
'range must be same dimensions as array, in this case 3x3
Set r = ActiveSheet.Range("A1:C3")
'this simply puts array into range values
r.Value2 = v
End Sub
Function populate(v As Variant)
For i = 0 To 2
For j = 0 To 2
v(j, i) = i * j * j - i + 2
Next j
Next i
End Function
However, since you're already looping through the dictionary for the values, why not just write the values directly to the worksheet? You can mimic the transpose by swapping your row and column indices
Sub test()
Dim dict As Dictionary
Set dict = New Dictionary
'fill dictionary with values
populate dict
'loop through dictionary, and add items to worksheet
For i = 0 To dict.Count - 1
ActiveSheet.Cells(1, i + 1).Value = dict.Keys(i)
ActiveSheet.Cells(2, i + 1).Value = dict.Items(i)
Next i
End Sub
Function populate(dict As Dictionary)
dict.Add "help", "me"
dict.Add "I'm", "lost"
dict.Add "everything", "1"
dict.Add "or", "0"
End Function