how to merge three matrix into one ?

if i have three matrix with different size like this

 A = [ 1 1 0 0 1 0
       1 0 1 0 0 1
       1 1 0 1 0 1
       0 1 0 1 0 0 ]

 B = [ 2 1 0                      
       1 1 1                             
       2 1 1
       1 1 0 ]  
C = [ 0 1 0 0 0 0
      3 2 1 2 1 2 ]

 And i want to merge them like this ( A is the middle , C above A and B on the Right of A )

   D = [ 0 1 0 0 0 0
         3 2 1 2 1 2

         1 1 0 0 1 0  2 1 0
         1 0 1 0 0 1  1 1 1
         1 1 0 1 0 1  2 1 1
         0 1 0 1 0 0  1 1 0 ]

[Azzi Abdelmalek]

What is the size of the Matrix D, if it is a matrix!

[Firas Al-Kharabsheh]

let be D is ( N x M ) matrix

[Firas Al-Kharabsheh]

yes its a matrix but i put a spaces between three matrix to explain to you how i want to merge these matrices

[Azzi Abdelmalek]

From what you posted, in D, the frist three rows contain 6 elements, and the other rows contain 9 elements. You have to precise if you want to append with zeros or nans. A space is not a number, you can append with empty vectors if D was a cell array

Answer 1

[Azzi Abdelmalek]

If you want to append with zeros

A = [ 1 1 0 0 1 0
     1 0 1 0 0 1
     1 1 0 1 0 1
     0 1 0 1 0 0 ]
B = [ 2 1 0                      
     1 1 1                             
     2 1 1
     1 1 0 ]  
C = [ 0 1 0 0 0 0
    3 2 1 2 1 2 ]
ma=size(A,2)
mb=size(B,2)
[nc,mc]=size(C)
m=max(mc,mb+ma);
C=[C zeros(nc,m-mc)];
out=[C;A B]

[Azzi Abdelmalek]

If you want to use cell arrays

A = [ 1 1 0 0 1 0
     1 0 1 0 0 1
     1 1 0 1 0 1
     0 1 0 1 0 0 ]
B = [ 2 1 0                      
     1 1 1                             
     2 1 1
     1 1 0 ]  
C = [ 0 1 0 0 0 0
    3 2 1 2 1 2 ]
[na,ma]=size(A)
[nb,mb]=size(B)
[nc,mc]=size(C)
m=max(mc,mb+ma);
out=cell(na+nc,m)
out(1:nc,1:mc)=num2cell(C)
out(nc+1:nc+na,1:mb+ma)=num2cell([A B])

[Firas Al-Kharabsheh]

thank you

[Firas Al-Kharabsheh]

can you help me with this question http://www.mathworks.com/matlabcentral/answers/277133-if-there-is-two-matrix-i-want-to-add-one-under-condition ?