Create a vector that only the first element and the last element is 0

B=zeros(mx,1);
for z=1:mx
    if B(z,1) == B(1,1)
        B(z,1) = 0;
    elseif B(z,1) == B(mx,1)
        B(z,1) = 0;
    else
        B(z,1) = 1;
    end
end

I want to create a vector B that only (1,1) and (mx,1) equal to 0 but from (2 to mx,1) equal to 1. But my code still only show a zero matrix. How can I fix that?

Answer 1

[KSSV]

N = 10 ;  % length of the vector
iwant = ones(N,1) ;
iwant(1) = 0 ;
iwant(N) = 0 ;

[Walter Roberson]

Or more compactly,

iwant = [0; ones(N-2,1); 0];

[Jan]

Or with the loop:

B = zeros(mx,1);
for z = 2:mx-1
  B(z) = 1;
end

This is not efficient and I would not use it in real programs, but it shows how your loop can be modified.