After each commented section, explain what the data structure looks like at that point in the code.

ArrayList numbers;

numbers = new ArrayList<>();

for(int i=90; i<=100;

i++) numbers.add(i);

//picture 1

numbers.set(numbers.size()-1, 10);

numbers.remove(new Integer(91));

numbers.remove(0);

//picture 2

LinkedList aList;

aList = new LinkedList<>();

for(int i=10; i>=1; i--){ aList.addFirst(i); }

//picture 3

aList.removeLast();

aList.addFirst(100);

aList.addFirst(aList.getLast());

//picture 4

?