Question

A linked list of Strings named list has been declared and initialized.

Assume that the following code is run on list:
(""3""); list.addFirst(""1""); list.addLast(""2""); (0); list.addFirst(""7""); (""3""); list.addFirst(""6""); list.addLast(""4""); (3); list.addFirst(""2""); list.addFirst(""3""); (""7""); list.addLast(""0""); list.addLast(""9"");
What does (3) return?

Answer 1

Without complete method calls for the linked list named list, it's impossible to determine what (3) returns. Operations like list.addFirst() and list.addLast() add elements to a list, but (3) appears incomplete.

Step-by-step explanation:

When interpreting the code for a linked list of Strings named list, it appears there is an attempt to perform certain operations on the list. However, without the actual method names or context for statements like (3), it is unclear what action is supposed to be performed. In a typical linked list, methods like list.addFirst() and list.addLast() are used to add elements to the beginning and end of the list, respectively. If (3) is meant to represent an operation like list.get(3), it would return the element at index 3 of the list. However, in order to provide an accurate answer, the full method calls and list state after each operation need to be provided.