Consider the following method.

public ArrayList sequence(int n) { ArrayList list = new ArrayList(); for (int k = 0; k < n; k++) { list.add(new Integer(n + 2 * k)); } return list; }

Which of the following is printed as a result of executing the following statement?

System.out.println(sequence(5));

[7, 9, 11, 13]

[7, 9, 11, 13, 15]

[5, 7, 9, 11, 13]

[5, 7, 9, 11]

[0, 2, 4, 6, 8]

2.

Consider the following method:

public static void mystery(ArrayList words) { int k = 0; int newSize = 3 * words.size(); while (words.size() < newSize && words.size() > 0) { words.add(words.get(k)); k++; } } 

Which of the following describes what the method mystery() does to the ArrayList words?

The ArrayList words is extended to three times its size by repeating the entire contents of the list three times in sequence.

The ArrayList words is unchanged.

The ArrayList words is extended to three times its size by replacing each single element in the list with that element repeated three times.

The method generates an IndexOutOfBoundsException.

The ArrayList words is extended to three times its size by repeating the first element of the list at the end of the original list until the size of the list is three times its original size.