Last Substring Given the string 'ab'; we find the alphabetically-ordered set of its substrings to be fa'; "ab; b'. The substring that occurs last in the ordered list is "b". This is the value to determine Function Description Complete the function compute in the editor below. The function must return the last substring in s when all substrings have been sorted alphabetically compute has the following parameter(s): ath and hinking s: a string Constraints Sample Case 0 Sample Input o s-"ba" hoose Sample Output 0 Explanation 0 s"ba" The alphabetically-ordered set of unique substrings of s is fa, "b, "ba') Sample Case 1 Sample Input 1 tween ing and TLAE Sample Output 1