CS 3 Midterm 2023

Front

Which statement is a correct declaration and initialization of an ArrayList of String values? Options: 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>();

Back

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

Front

Given the nums ArrayList with the values [5, 4, 3, 2], what statement below removes the value 3 from the list? Options: nums.remove(1), nums.get(2) = null, nums.remove(2), nums.remove(3)

Back

nums.remove(2)

Front

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? Options: nums.set(7, 5), nums.set(7, 5), nums[2] = 5, nums.set(1, 5)

Back

nums.set(1, 5)

Front

What index value is used to locate the last element in the nums ArrayList? Options: nums.length, nums.size()-1, nums.size(), nums.length()-1

Back

nums.size()-1

Front

The ArrayList class ____ method returns the current ArrayList size.

Back

size

Front

What is the output? Options: 15, 5, 9, 11, 7

Back

5

Front

What is the output?

Back

10

Front

What is the output?

Back

11

Front

What is the output?

Back

27

Front

What is the output? Options: Same, Error, Not same

Back

Not same