Developing Algorithms Using ArrayLists

AP Computer Science A· difficulty 3/5

ArrayList<Integer> list = new ArrayList<>();
list.add(2); list.add(2); list.add(3); list.add(4);
for (int i = list.size() - 1; i >= 0; i--) {
  if (list.get(i) == 2) {
    list.remove(i);
  }
}

What does list contain?

A
$[2, 3, 4]$
B
$[3, 4]$
check_circle
C
$[2, 2, 3, 4]$
D
$[]$

Explanation

Iterating in reverse safely removes all matching elements.

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