A way to rank researchers is there h-index. An h-index is the maximum integer i that the researcher has at least i papers that have been cited at least i times each. Suppose a researcher "r" has written n papers and paper i has been cited cy times. Suppose you have these sorted in an array C with c1 c2 . cn. Create a divide-and-conquer algorithm to find researcher rs h-index, The algorithim given must be O(log n).