MATLAB: Quickly create a vector of ones and zeros

Question

My question is if there is a way to create a vector of zeros

vec = 
    0 0 0 0 0 0 0 0

and specify a position lets say from the second until the fourth element to be ones.

vec = 
    0 1 1 1 0 0 0 0

Is there a quick way of doing this in Matlab avoiding loops?

Answer 1

vectorization is possible :

 N=10;
 vec=zeros(N,1);
 positions=[2:4];
 vec(positions)=1;