PetscSortIntWithPermutation

Computes the permutation of values that gives a sorted sequence.

#include "petsc.h"  
#include "petscsys.h"    
int PetscSortIntWithPermutation(int n,const int i[],int idx[])

Not Collective

	n	- number of values to sort
	i	- values to sort
	idx	- permutation array. Must be initialized to 0:n-1 on input.

i is unchanged on output.