MATLAB: If i have tow matrix how to crossover of them

Question

if i have this matrix

 A = [ 1 0 1 1 
       1 1 0 1
       0 1 0 1
       1 1 1 0]
 B = [ 0 1 1 0
       0 0 1 1
       1 1 0 1
       1 1 0 0]
 i want to  make them like that 
 A' = [ 1 0 1 1  1 1 0 1  0 1 0 1  1 1 1 0 ]
 B' = [ 0 1 1 0  0 0 1 1  1 1 0 1  1 1 0 0 ]

then i want to randomly crossover in which every 4 element like a group

 C1 = [ 1 0 1 1  0 0 1 1  0 1 0 1  1 1 0 0 ]
 C2 = [ 0 1 1 0  1 1 0 1  1 1 0 1  1 1 1 0 ]

THEN I WANT TO return C1 and C2 like this

C1 = [ 1 0 1 1  
       0 0 1 1  
       0 1 0 1  
       1 1 0 0 ]
C2 = [ 0 1 1 0  
       1 1 0 1  
       1 1 0 1  
       1 1 1 0 ]

Answer 1

R = repmat(randi([0,1],4,1),1,4);
C1 = A.*R+B.*(1-R);
C2 = A.*(1-R)+B.*R;