petsc-3.7.7 2017-09-25

PetscSortIntWithPermutation

Computes the permutation of values that gives a sorted sequence.

#include "petscsys.h"  
PetscErrorCode  PetscSortIntWithPermutation(PetscInt n,const PetscInt i[],PetscInt 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.

On output i is unchanged and idx[i] is the position of the i-th smallest index in i.