MATLAB: Can this loop be vectorized

Question

Can this loop be vectorized?

a=[5,7,8,5,6];
n=length(a);
b=a;
c=zeros(n,n);
for i=1:length(a)
    for j=1:length(a)
        if a(i)==b(j)
            c(i,j)=0;
        end
        if a(i)~=b(j)
            c(i,j)=1;
        end
    end
end
c

It returns

     0     1     1     0     1
     1     0     1     1     1
     1     1     0     1     1
     0     1     1     0     1
     1     1     1     1     0

Answer 1

c = a ~= a.'  %works since R2016b

prior to R2016:

c = bsxfun(@ne, a, a.') %ne is the function name of ~=