Range Selection of Unsorted Array

Write a method findRanks in Java that accepts an unsorted array of integers vals, and a starting and ending rank start and end, numbering ranks from 0, and returns an unsorted (any order is acceptable) array containing the lo-th through the hi-th elements, inclusive, of vals.  



int[] findRanks(int[] vals, int lo, int hi)



For instance, if vals contains 10 elements as shown:



4  2  9  11  9  19  21  14  16   8



then the call findRanks(vals, 2, 5) will return an array containing the 3rd (remember we number from 0) through 6th items in vals (e.g. 8  9  11  9).