The Question: http://www.mathorama.com/apcs/scrambleWordQuestion.pdf

Tester for your code

import java.util.ArrayList;
import java.util.List;
public class Scrambler
{
 /** 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)
 {
    //your code here
      return "NOT DONE YET";
 }

 /** Modifies wordList by replacing each word with its scrambled
  *  version, removing any words that are unchanged as a result of scrambling. 
  *  @param wordList the list of words
  *  Precondition: wordList contains only non-null objects 
  *  Postcondition:
  *  - all words unchanged by scrambling have been removed from wordList - each of the remaining words has been replaced by its scrambled version
  *  - the relative ordering of the entries in wordList is the same as it was
  *  before the method was called
  */


 public static void scrambleOrRemove(List<String> wordlist)
 {
     //your code here
 }
 public static void main (String[] args)
 {
    System.out.println("Part a");
    List<String> scramble = new ArrayList<String>();
    List<String> expected = new ArrayList<String>();
    scramble.add("TAN");
    scramble.add("ABRACADABRA");
    scramble.add("WHOA");
    scramble.add("AARDVARK");
    scramble.add("EGGS");
    scramble.add("A");
    scramble.add("");
    expected.add("TNA");
    expected.add("BARCADABARA");
    expected.add("WHOA");
    expected.add("ARADVRAK");
    expected.add("EGGS");
    expected.add("A");
    expected.add("");


    for(int i=0; i<scramble.size(); i++) {
        System.out.print("'"+scramble.get(i)+"' -> '");
        System.out.print(scrambleWord(scramble.get(i)));
        System.out.println("' (expected '"+expected.get(i)+"')" );

    }
    List<String> wordList = new ArrayList<String>();
    System.out.println("Part b");
    wordList.add("TAN");
    wordList.add("ABRACADABRA");
    wordList.add("WHOA");
    wordList.add("APPLE");
    wordList.add("EGGS");
    System.out.println("wordList after the call to scrambleOrRemove should be");
    System.out.println("TNA, BARCADABARA, PAPLE");
    scrambleOrRemove(wordList);

    for(String word:wordList) {
        System.out.print("'"+word+"' ");      
    }
 }
}      

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