MATLAB: How to creat this rectangular signal

Question

X=[1 1 1 0 0 0 0 1 1 1 1 1 0 0 0 0 0 0 1 1 0 0 0]

Y=[1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1]

X and Y these are rectangular signal vectors

I would like a transformation x (t) to y (t)?

Answer 1

x = [1 1 1 0 0 0 0 1 1 1 1 1 0 0 0 0 0 0 1 1 0 0 0];
y = ones(size(x));
y(strfind(x, [0,1])) = -1;
y = cumprod(y);
y(y == -1) = 0;