9 Exercise 1: Using recursive algorithm, write a method called "Words that takes an integer and print the numbers in words. words(987) Example: Calling: Words(987) words(98) [print "seven") The output should be: nine eight seven words(9) [print "eight"] [print "nine") O Exercise 2: Recursive Algorithm for Sequential Search. This algorithm takes a linked list, search for an integer in the linked list, and return true if integer is present and false otherwise. O Exercise 3: Create Linked List, add integer numbers to the list, then traverse the list forward and backward, and compute the average