Count The Number Of Words In The Following String. [Hint: You Can Use Str_split With A Well-Designed Pattern To Separate The Words. Str_split(X, Pattern)[[1]] Extracts The Vector Of Words.] 'Dear Friends, The Exuberance Of The Change Of Seasons At Iowa State University Never Grows Old From The Blooms Of Spri Ng To The Joys Of Another Graduating Class. During