Shortcut for Permutations with Repetition

mlarson

Well-known Member
Joined
Aug 25, 2011
Messages
509
Office Version
  1. 2010
Platform
  1. Windows
Hi all, in the excerpt of a code below I am trying to enter all permutations of 4 things. Is there a shortcut to do this without typing out all 256 permutations with repetition (4^4 = 256)? Thanks for your help!

If Col = 1 Then
Ary = Array (1, 1, 1, 1)
ElseIf Col = 2 Then
Ary = Array (1, 1, 1, 1)
ElseIf Col = 3 Then
Ary = Array (1, 1, 1, 1)
ElseIf Col = 4 Then
Ary = Array (1, 2, 3, 4)
 

Excel Facts

What do {} around a formula in the formula bar mean?
{Formula} means the formula was entered using Ctrl+Shift+Enter signifying an old-style array formula.
this will print all combos...

Code:
Sub h()
    Dim r As Long, a As Long, b As Long, c As Long, d As Long
    r = 1
    
    For a = 1 To 4
    For b = 1 To 4
    For c = 1 To 4
    For d = 1 To 4
        Cells(r, 1) = a & b & c & d
        r = r + 1
    Next d
    Next c
    Next b
    Next a
    
End Sub

you can build an array instead of printing, just modify the code
 
Last edited:
Upvote 0
Thanks, cerfani! I'll play around and modify that and let you know if I have any follow-up questions, and will let you know how well it works. Thanks again!
 
Upvote 0
cerfani, how exactly would I modify the code to build an array? I'm a novice when it comes to coding.
 
Upvote 0
Code:
Sub h()
    Dim a As Long, b As Long, c As Long, d As Long
    Dim arrays As New Collection

    For a = 1 To 4
    For b = 1 To 4
    For c = 1 To 4
    For d = 1 To 4
        arrays.Add Array(a, b, c, d)
    Next d
    Next c
    Next b
    Next a

    'all your arrays are in the arrays collection
End Sub

one example, i put all the arrays into another array... you can decide what to do with them but the arrays collection can reference each array using index 0 - 255
 
Last edited:
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