making answer into array

How can I concatenate my answers from a for-loop into an array. consider this example:

a=[2 1 3 1 
   1 4 1 5 
   6 7 1 1 
   8 1 9 1];
for i=(1:4) 
  row=(a(i,:)); 
  b=sort(row) 
end

I need an answer which is (b= 4x4 array) like the original (a)

cheers.

Answer 1

[Oleg Komarov]

Are you trying to do:

a = [2 1 3 1
     1 4 1 5
     6 7 1 1
     8 1 9 1];

sort(a,2)

ans =
     1     1     2     3
     1     1     4     5
     1     1     6     7
     1     1     8     9

[God'sSon]

yes, but I have a series of expressions in a for-loop to execute.

[Oleg Komarov]

Even if you were to store the answer progressively into b, you will always have to reference it, thus I suggest to move the sort operation outside the loop...even better would be to post the operation you want to perform inside the loop, maybe it is avoidable.