 /** Scrambles a given word.
 * @param word the word to be scrambled
 * @return the scrambled word (possibly equal to word)
 * Precondition: word is either an empty string or contains only uppercase letters.
 * Postcondition: the string returned was created from word as follows:
 * - the word was scrambled, beginning at the first letter and continuing from left to right
 * - two consecutive letters consisting of "A" followed by a letter that was not "A" were swapped
 * - letters were swapped at most once
 */
public static String scrambleWord(String word){ 

}