MATLAB: Combinations of a single vector

Question

Say I have the following vector:

a = [200, 150, 100, 80, 60, 50, 40, 38, 30, 20, 10]

Is there a function in MATLAB that allows me to generate all 55 possible combinations i.e.

200 & 150; 200 & 100; 200 & 80; 200 & 60; … 30 & 20; 30 & 10; 20 & 10.

Answer 1

You can use ‘nchoosek’ for that task:

   C = nchoosek(a,2);