Excel VBA list pairing

I have 3 columns

apple     goat   sam
orange   dog   dave
pear        cat    matt

I need 3 columns of every combination (3x3x3 rows)

apple goat sam
apple goat dave
apple goat matt
apple dog sam
apple dog dave
apple dog matt
............
orange goat sam
orange dog dave
orange cat matt
.......


I'm sure this type of problem has a name, but I don't know it. sorry for the silly example
newparadigmzAsked:
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Bill PrewCommented:
What you are trying to generate are typically called "combinations" and "permutations".  Below is an example of a small VBA routine that can generate what you want.  Hopefully this will give you an idsea how to approach this.

Sub GenerateCombinations()

    Dim InArr1() As Variant
    Dim InArr2() As Variant
    Dim InArr3() As Variant
    Dim OutArr() As Variant
    Dim InNdx1, InNdx2, InNdx3, OutNdx As Long
 
    Dim InRng1 As Range
    Dim InRng2 As Range
    Dim InRng3 As Range
    Dim OutRng As Range
 
    Set InRng1 = Range("A1", Range("A1").End(xlDown))
    Set InRng2 = Range("B1", Range("B1").End(xlDown))
    Set InRng3 = Range("C1", Range("C1").End(xlDown))
 
    InArr1 = InRng1
    InArr2 = InRng2
    InArr3 = InRng3
 
    Set OutRng = Range("E1", Range("G1").Offset(UBound(InArr1) * UBound(InArr2) * UBound(InArr3)))
    OutArr = OutRng
 
    InNdx1 = 1
    InNdx2 = 1
    InNdx3 = 1
    OutNdx = 1
 
    For InNdx1 = 1 To UBound(InArr1)
        For InNdx2 = 1 To UBound(InArr2)
            For InNdx3 = 1 To UBound(InArr3)
                OutArr(OutNdx, 1) = InArr1(InNdx1, 1)
                OutArr(OutNdx, 2) = InArr2(InNdx2, 1)
                OutArr(OutNdx, 3) = InArr3(InNdx3, 1)
                OutNdx = OutNdx + 1
            Next
        Next
    Next
 
    OutRng.Value = OutArr

End Sub

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~bp
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newparadigmzAuthor Commented:
Perfection.

Thanks
0
Bill PrewCommented:
Welcome, glad that helped.

~bp
0
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