Question

The following code is run on list:

(""A""); list.addLast(""B""); list.addFirst(""C""); list.addFirst(""D""); (2); list.addLast(""E""); list.addLast(""F""); (4); list.addLast(""G""); list.addFirst(""H""); (2); list.addLast(""I""); list.addFirst(""J"");
What does list now contain?

Answer 1

The code adds elements to a list using the addFirst and addLast methods, resulting in a list containing ten elements.

Step-by-step explanation:

The code is adding elements to a list using the addFirst and addLast methods. The initial list is ["A"]. After adding "B" to the end, the list becomes ["A", "B"]. Then, "C" is added to the beginning, making the list ["C", "A", "B"]. "D" is added to the beginning as well, resulting in ["D", "C", "A", "B"].

After adding "E" to the end and "F" to the end, the list becomes ["D", "C", "A", "B", "E", "F"]. Then, "G" is added to the end, and "H" is added to the beginning, giving us ["H", "D", "C", "A", "B", "E", "F", "G"].

Finally, "I" is added to the end, and "J" is added to the beginning, resulting in the final list: ["J", "H", "D", "C", "A", "B", "E", "F", "G", "I"].