Hello,
Is there an easy function to find the permutation used in
sorting a list?
For instance, take the list
xx: [2,3,1,5]
Sorting it in increasing order gives
yy: [1,2,3,5]
So, the permutation s() which produced the sort is
s(1) = 2, s(2)=3, s(3) = 1, s(4) = 4
Thanks for any information.
-sen
--
---------------------------------------------------------------------------
| Sheldon E. Newhouse | e-mail: sen1 at math.msu.edu |
| Mathematics Department | |
| Michigan State University | telephone: 517-355-9684 |
| E. Lansing, MI 48824-1027 USA | FAX: 517-432-1562 |
---------------------------------------------------------------------------