How to Intersect two Arrays?

Question

I'm working with VB.Net, and have two one-dimensional Arrays. Is there an Inbuilt function for finding the elements that are common to both of them? Or do I have to write one for myself?

similar question is at: http://stackoverflow.com/questions/245557/algorithm-to-find-if-two-sets-intersect But it does not answer my question — Devdatta Tengshe, Jun 11 '09 at 16:32

score 9 · Answer 1 · edited Mar 05 '20 at 16:52

9

If you can use the LINQ extension methods (VB9), then yes - you can use Enumerable.Intersect():

dim a as String() = {"blah", "bleak", "blorg", "blue"}
dim b as String() = {"blaah", "bleak", "bleee", "blue"}

' c will contain the intersection, "bleak" and "blue" '
dim c as IEnumerable(Of String) = a.Intersect(b)

edited Mar 05 '20 at 16:52

dpatchery

508
5
19

answered Jun 11 '09 at 16:39

Shog9

156,901
35
231
235

+1 for this, OP should be aware however that this is a VB9.0 solution, if he is using VB8.0 (Visual Studio 2005) this won't work for him. – Patrick McDonald Jun 11 '09 at 16:46
Unfortunately, I'm still working with VB8.0 with 2.0 .NET framework, so looks like I'm out of luck – Devdatta Tengshe Jun 11 '09 at 16:56

score 1 · Answer 2 · answered Nov 02 '11 at 17:16

1

Just use LinqBridge for .net 2.0 http://code.google.com/p/linqbridge/downloads/list and you should be able to use the intersect method.

answered Nov 02 '11 at 17:16

firematta

13
4

score 1 · Accepted Answer · edited May 23 '17 at 11:59

1

I'm afraid you'll have to write one for yourself, because there is no built-in function in .NET 2.0.

Look at this StackOverflow question for ideas about how you could implement it yourself.

edited May 23 '17 at 11:59

Community

1
1

answered Jun 12 '09 at 12:55

Meta-Knight

17,626
1
48
58

How to Intersect two Arrays?

3 Answers3

Linked