find subset of a set

I created a variable that stores a set of numbers for an arc (a,b). Sc{1,2} = [1]; Sc{2,1} = [1]; Sc{1,3} = [2]; Sc{3,1} = [2]; Sc{3,4} = [2]; Sc{4,3} = [2]; Sc{2,4} = [1]; Sc{4,2} = [1];

I would like to implement the following condition:

s{1} = [1,2];
for v = 1:n,               
             if s{v} is a subset of s{u}
             s{v} = intersect( s{u},Sc{u,v});
            end;
         end;

where u is the previous node. I dont know how to code if s{v} is a subset of s{u}' in matlab. Please help.

Answer 1

[Doug Hull]

>> all(ismember([1 3], [2 4]))

ans =

       0

>> all(ismember([1 3], [1  3 2 4]))

ans =

       1

>> all(ismember([1 3], [1 2 4]))

ans =

       0