MATLAB: Is there a smart way to update the array

update the array

I am trying to update my array.i have an array ids which needs to be updated,whenever there is a new member(which is not present already in ids).Currently, i am using:
 end
test = ismember(id_final,ids);%id_final is a temporary array
for k = 1:size(test,2)
if test(k) ==0
     ids =cat(2,ids,id_final(k));
        end
    end
Is there some smart way to do this?
Please reply.

Best Answer

test = ismember(id_final,ids);%id_final is a temporary array
ids = [ids id_final(~test)];
Note: if the order of the ids is not important, just use
ids = union(ids, id_final);
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