CS 3 Midterm 2023

What is the output?

• [two, five]

• [two, four]

• [two, three]

• [four, five]

Which statement is a correct declaration and initialization of an ArrayList of String values?

• ArrayList <String> name;

  name = new ArrayList<String>();

• String name; name = new String<ArrayList>();

• ArrayList <String> name; name = ArrayList<String>();

• ArrayList name; name = new ArrayList<String>();

Given the nums ArrayList with the values [5, 4, 3, 2], what statement below removes the value 3 from the list?

• nums.remove(1)

• nums.get(2) = null

• nums.remove(2)

• nums.remove(3)

Given the ArrayList nums with the values [3, 7, 6, 0], what code below is the proper way to change the 7 to be a 5?

• nums.set(7, 5)

• nums.set(7, 5)

• nums[2] = 5

• nums.set(1, 5)

What index value is used to locate the last element in the nums ArrayList?

• nums.length

• nums.size()-1

• nums.size()

• nums.length()-1

The ArrayList class ____ method returns the current ArrayList size.

• length

• size

• capacity

• rows

What is the output?

• 15

• 5

• 9

• 11

• 7

What is the output?

• 10

• 15

• 6

• 9

• 5

What is the output?

• There is no output due to a syntax error

• 33

• There is no output due to a runtime exception

• 11

• 14

What is the output?

• 27

• 18

• 21

• 24

• 15