how to mix data randomly

I have two data set A and B with both length equal to 40. I want to mix data A and B randomly. how to do it.

Answer 1

[KSSV]

A = rand(40,1 );  % some random data 
B = rand(40,1) ;  % some random data
% combining  
C = [A ; B] ;   % join A and B
C = C(randsample(1:80,80)) ;   % shuffle randomly

You can shuffle randomly A, B and merge also..