sort entire row

I have

a= 3 16
   6  22
   2    6
   1    25
   4   4

I need to sort 2nd column and keep the entire matrix according to sort of second column

i wan the output as

 b=4  4
   2  6
   3  16
   6   22
   1   25

Answer 1

[the cyclist]

b = sortrows(a,2);

[Rahul]

thanks