All possible pairs in a vector

Hi, and thank you in advance for taking the time to read this. Is there a quick way to get all possible pairs from a vector? For example A=[1 2 3 4 5]; [1 2], [1 3], [1 4], [1 5], [2 3], [2 4], [2 5], [3 4], [3 5], [4 5]. I think I can get that with 2 for loops but I would like to know if there's a know faction for that.

Thank you

Answer 1

[Star Strider]

Try this:

A = [1 2 3 4 5];
Out = nchoosek(A, 2)

Out =
     1     2
     1     3
     1     4
     1     5
     2     3
     2     4
     2     5
     3     4
     3     5
     4     5

[Antonis Asiminas]

Works like a charm! Thank you!

[Star Strider]

As always, my pleasure!

Answer 2

[David Fletcher]

nchoosek(A,2)