Calculate possible combinations for SKU

Question

I have this situation:

a product with an SKU
this product has attributes (checkboxes) who have a SKU suffix
(imagine a product with addons)

Attributes are always in a fixed order and are not manditory. The final SKU for a product is basesku + selected attributes' suffixes.

For example a product with basesku XXX has 3 attributes with suffixes A, B and C.

Possible combinations for this product are:

XXX-A
XXX-A-B
XXX-A-B-C
XXX-A-C
XXX-B
XXX-B-C
XXX-C

Because the attributes are in a fixed order, it is never possible to have XXX-C-B for example.

What is the best way to calculate these SKU's?

Edit: I should have told these attributes are dynamically created. So it is not possible to have attA + "-" + attB. I need a way to dynamically generate the list of possible SKU's

possible duplicate of [How can I obtain all the possible combination of a subset?](http://stackoverflow.com/questions/13765699/how-can-i-obtain-all-the-possible-combination-of-a-subset) — Gabe, Dec 10 '12 at 20:34
yes duplicate, thanks for the comment I could not find this before — jaap, Dec 10 '12 at 21:13

score 3 · Answer 1 · answered Dec 10 '12 at 20:42

3

Use a StringBuilder

var sb = new StringBuilder("XXX");
if (skuACheckBox.Checked) {
    sb.Append("-A");
}
if (skuBCheckBox.Checked) {
    sb.Append("-B");
}
if (skuCCheckBox.Checked) {
    sb.Append("-C");
}
string skuWithSuffix = sb.ToString();

answered Dec 10 '12 at 20:42

Olivier Jacot-Descombes

104,806
13
138
188

paparazzo · Answer 2 · 2012-12-10T20:50:43.507

I see the other answer is a count.
Sorry if I read the question wrong.

Public String SKU { get; set; }

Public bool Aattr { get: set; }
Public bool Battr { get: set; }
Public bool Cattr { get: set; }

Public String SKUwSuffix 
{
   get
   {
      string sKUwSuffix = SKU; 
      if (Aattr) sKUwSuffix += "-A";
      if (Battr) sKUwSuffix += "-B";
      if (Cattr) sKUwSuffix += "-C";
      return sKUwSuffix;
   }
}

score 0 · Answer 3 · answered Dec 10 '12 at 20:48

0

I would recommend to maintain a non duplicate selected suffix attribute collection and finally concatenate the sku by using the collection.

answered Dec 10 '12 at 20:48

humblelistener

1,456
12
22

Calculate possible combinations for SKU

3 Answers3