MATLAB: Matrix Indexing

Question

I have two index files:

On times:

 t_on = [2 10 20 ...];

Off times:

 t_off = [5 15 23 ...];

I want to get a vector with ones from 2..5, 10…15, 20…23

 [0 1 1 1 1 0 0 0 0 1 1 1 1 1 1 0 ...]

I am looking for a way to do so without using loops.

Answer 1

Another alternative:

A = zeros(1,t_off(end)+1);
A(t_on) = 1;
A(t_off+1) = -1;
A = cumsum(A(1:t_off(end)));