static char help[] = "Tests PetscSortIntWithPermutation().\n\n";

#include <petscsys.h>

int main(int argc, char **argv)
{
  PetscInt i;
  PetscInt x[]  = {39, 9, 39, 39, 29}, index[5];
  PetscInt x2[] = {39, 9, 19, 39, 29, 39, 29, 39}, index2[8];

  PetscFunctionBeginUser;
  PetscCall(PetscInitialize(&argc, &argv, (char *)0, help));
  PetscCall(PetscPrintf(PETSC_COMM_SELF, "1st test\n"));
  for (i = 0; i < 5; i++) index[i] = i;
  PetscCall(PetscSortIntWithPermutation(5, x, index));
  for (i = 0; i < 5; i++) PetscCall(PetscPrintf(PETSC_COMM_SELF, " %" PetscInt_FMT "     %" PetscInt_FMT "     %" PetscInt_FMT "\n", x[i], index[i], x[index[i]]));

  PetscCall(PetscPrintf(PETSC_COMM_SELF, "\n2nd test\n"));
  for (i = 0; i < 8; i++) index2[i] = i;
  PetscCall(PetscSortIntWithPermutation(8, x2, index2));
  for (i = 0; i < 8; i++) PetscCall(PetscPrintf(PETSC_COMM_SELF, " %" PetscInt_FMT "     %" PetscInt_FMT "     %" PetscInt_FMT "\n", x2[i], index2[i], x2[index2[i]]));
  PetscCall(PetscFinalize());
  return 0;
}

/*TEST

   test:

TEST*/