2. The partition (A, lo, hi, pivot) method used in this assignment works as follows. Denote by I the value of A[pivot] before the call to partition, and denote by newpivot the return value of partition. The call to partition re-arranges the elements of Allo,...,hi) so that: A[newpivot] all the elements of A[lo,..., (newpivot-1)] are