how to circularly shift the entire elements of a matrix

i need to shift the elements by one position if the input is

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

the output i needed is

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

pls send me the code

Answer 1

[Stephen23]

>> b = a.';
>> b(:) = b([end,1:end-1]);
>> c = b.'
c =
   9   1   2
   3   4   5
   6   7   8