Generate Unique combinations in VBA of values with a sum constraint

DonKampfello

New Member
Joined
Apr 18, 2022
Messages
13
Office Version
  1. 365
Platform
  1. Windows
Hi Excel geniuses

I need help with generating unique combinations of values in 1 column:

A ("Width")
0.660
0.742
0.825
0.990
1.155
1.237
1.253

I have used the Code given by the following user. It generated the values in the orange table, which worked out okay:

However, I have encountered 3 problems:
1. The combinations are stored together in one single cell. I need them separated in different columns, so I can make a sum total of the combinations. The Blue table is my end goal.
2. The VBA code does not allow each input from the yellow column ("A") to be used more than once. I need each width to be used more than once.
3. I need a constraint inside the VBA code, so only combinations with sum total = < 3,850 are generated. Is this possible?

I made The Blue table manually to illustrate my end goal. I hope the task makes sense.

1664998082208.png


VBA Code:
Sub Subsets()
Dim MyNames As Variant, OutCell As Range, MyDic As Object, i As Long

    MyNames = Range(Range("A2"), Range("A2").End(xlDown)).Value
    Set OutCell = Range("C1")
    
    For i = 1 To 6
        Set MyDic = CreateObject("Scripting.Dictionary")
        MyDic(0) = "Sets of " & i
        Call RecurSubs(MyNames, i, 0, 0, "", MyDic)
        OutCell.Offset(, i - 1).Resize(MyDic.Count).Value = WorksheetFunction.Transpose(MyDic.items)
        Set MyDic = Nothing
    Next i
    
End Sub

Sub RecurSubs(ByRef MyNames, ByRef MaxLevel, ByVal CurLevel, ByVal ix, ByVal str1, ByRef MyDic)
Dim i As Long

    If CurLevel = MaxLevel Then
        MyDic(MyDic.Count) = Left(str1, Len(str1) - 2)
        Exit Sub
    End If
    
    For i = ix + 1 To UBound(MyNames)
        Call RecurSubs(MyNames, MaxLevel, CurLevel + 1, i, str1 & MyNames(i, 1) & ", ", MyDic)
    Next i
    
End Sub
 

Excel Facts

Whats the difference between CONCAT and CONCATENATE?
The newer CONCAT function can reference a range of cells. =CONCATENATE(A1,A2,A3,A4,A5) becomes =CONCAT(A1:A5)

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