Sorts an array of
PetscInt in place in increasing order.
n - number of values
arr - array of integers
arr - sorted array of integers
If the array is less than 64 entries long
PetscSortInt() is automatically used.
This function serves as an alternative to
PetscSortInt(). While this function works for any array of integers it is
significantly faster if the array is not totally random. There are exceptions to this and so it is highly
recommended that the user benchmark their code to see which routine is fastest.