PGAS - Arrays & ArrayLists

Front

Which is correct syntax to access an element of an ArrayList in Java? Options: list.get(index), list[index], list.getElement(index), list.index

Back

list.get(index)

Front

What does it mean for a list to be "dynamic"?

Back

You can easily add and remove elements.

Front

How do you get the number of elements in an ArrayList called "list" in Java?

Back

list.size();

Front

The _________ method will return the total elements in an ArrayList.

Back

size()

Front

What are the legal indexes for the array ar, given the following declaration:

int[] ar = {2, 4, 6, 8 }

?

Back

0, 1, 2, 3

Front

The ArrayList nums is initialized with the values [5, 3, 1]. What is displayed when the following code is executed?
nums.add(6);
nums.add(0, 4);
nums.remove(1);

Back

[4, 3, 1, 6]

Front

Which statement below is the correct way to retrieve the first element in the nums ArrayList? Options: nums.get(0), nums[0], nums(0), nums[1]

Back

nums.get(0)

Front

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

Back

nums.remove(2)

Front

What will print when the following code executes?
ArrayList<Integer> list = new ArrayList<Integer>();
list.add(7);
list.add(8);
list.add(9);
System.out.println(list.remove(0));

Back

7

Front

Which statement is the correct declaration and initialization of an ArrayList of String values? Options: ArrayList<String> name; name = new ArrayList<String>();, ArrayList name; name = new ArrayList<String>();, ArrayList<String> name; name = ArrayList<String>();, String<ArrayList> name; name = new String<ArrayList>();

Back

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