The Big Programming Thread - Page 811

private Map<String, LinkedList<String>> phoneBook;
	public MapPhoneBook() {
		phoneBook = new HashMap<String, LinkedList<String>>();
	}

/** 
	 * Associates the specified number with the specified 
	 * name in this phone book. 
	 * post: If the specified name is not present in this phone book,
	 *        the specified name is added and associated  with
	 *  	  the specified number. Otherwise the specified 
	 *  	  number is added to the set of number associated with name.
	 * @param name The name for which a phone number is to be added
	 * @param number The number associated with the specified name
	 * @return true if the specified name and number was inserted
	 */
	@Override
	public boolean put(String name, String number) {
        if(phoneBook.containsKey(name)) {
            LinkedList<String> numbers = phoneBook.get(name);
            if(!numbers.contains(number)) {
                numbers.add(number);
                return true;
            }
        } else {
            LinkedList<String> numbers = new LinkedList<String>();
            numbers.add(number);
            phoneBook.put(name, numbers);
            return true;
        }
		return false;
	}

public class Testphoneb {
		public static void main(String[] args) {
		Map<String, String> pb = new TreeMap<String, String>();
		System.out.println("Size: " + pb.size());
		pb.put("a", "1");
		pb.put("a", "2");
		pb.put("a", "3");
		pb.put("b", "2");
		System.out.println("Size: " + pb.size());
		System.out.println("Get a: " + pb.get("a"));
	}
}

/**
* Retrieves a set of phone numbers for the specified name. If the
* specified name is not present in this phone book an empty set is
* returned.
* @param name The name whose associated phone numbers are to be returned
* @return The phone numbers associated with the specified name
*/
Set<String> findNumbers(String name);

public Set<String> findNumbers(String name) {
		Set<String> number = new HashSet<String>();
		number = (Set<String>) phoneBook.get(name);
		return number;
	}

private Map<String, LinkedList<String>> phoneBook;
phoneBook = new HashMap<String, LinkedList<String>>();

private void fill() {
		pb.put("a", "1");
		pb.put("c", "3");
		pb.put("b", "2");
		pb.put("a", "2");
		pb.put("b", "1");
		pb.put("a", "3");
		pb.put("c", "2");
		pb.put("aaa", "111");
	}

assertEquals("Wrong size for number set to a:", 3, pb.findNumbers("a").size());

public List<String> findNumber(String name) {
        if(phoneBook.containsKey(name)) {
            return phoneBook.get(name);
        }
		return new LinkedList<String>();
}

      try {
         for(int i = 0; i < size-1; i++) {
            set.add(count[i]);
         }

String key = "mango";
int number = 42;
if (map.get(key) == null) {
    map.put(key, new ArrayList<Integer>());
}
map.get(key).add(number);