Question 3 The function exclusiveOr(81, 82) returns the exclusive or of set si and set s2, which contains elements in si or 82, but not in both. Implement the function. The actual return type Set should be the same as the actual type of the parameter Set. static Set exclusiveOr (Set 31, Set s2) Question 4 The function countOccf Roots takes a text represented as a string, and a dictionary that maps words to their roots, and returns a map that tells the mumber of times each word occurs in the text, treating each word the same as its root. Words are separated by spaces, and words that do not occur in the dictionary are ignored. static Map countOccRoots (String text, Map dic); For example, if the dictionary maps verbs see, sees, seeing, saw, and seen to their root form see, then the the word see occurs 8 times in the following text: The past tense of see is saw. The third-person singular simple present indicative form of se The present participle of see is seeing. The past participle of see is seen