MATLAB: How to transform a matrix in his snake version

Question

I'd want the code that transforms the matrix from

A=[1 2 3; 4 5 6; 7 8 9; 10 11 12]

to the matrix

B=[1 2 3; 6 5 4; 7 8 9; 12 11 10]

thanks

Answer 1

>> A=[1 2 3; 4 5 6; 7 8 9; 10 11 12];
   B=[1 2 3; 6 5 4; 7 8 9; 12 11 10]
   A([2:2:size(A,1)],:)=fliplr(A([2:2:size(A,1)],:));
   result=A
   isequal(result,B) % to check if you get the desired result
B =
     1     2     3
     6     5     4
     7     8     9
    12    11    10
result =
     1     2     3
     6     5     4
     7     8     9
    12    11    10
ans =
  logical
   1
>>