Assume That the CountIt and SumIt Methods in the Questions

question 47

Multiple Choice

Assume that the countIt and sumIt methods in the questions below receive a parameter Node temp, which references the first Node in a linked list where Node is a class that consists of data instances int info and Node next and further assume that the int variables count and sum are initialized to 0.
-Which of the following methods could be used to sum all of the items in the linked list?

• A) public int sumIt(Node temp) {
• While (temp != null)
• {
• Sum += temp.info;
• Temp = temp.next;
• }
• Return sum;
• }
• B) public int sumIt(Node temp) {
• While (temp != null)
• {
• Sum += temp.info;
• }
• Return sum;
• }
• C) public int sumIt(Node temp) {
• While (temp != null)
• {
• Sum++;
• Temp = temp.next;
• }
• Return sum;
• }
• D) public int sumIt(Node temp) {
• While (temp != head)
• {
• Sum += temp.info;
• Temp = temp.next;
• }
• Return sum;
• }
• E) public int sumIt(Node temp) {
• While (temp != null)
• {
• If (next != null) sum += temp.info;
• Temp = temp.next;
• }
• Return sum;
• }

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Definitions:

Leak

The accidental escape of a fluid or gas through a hole or crack, or the disclosure of confidential information.

Plumbing

The system of pipes, drains, fittings, valves, and fixtures installed for the distribution of water for drinking, heating, and washing, and the removal of waterborne wastes.

Piano

A musical instrument with keys that, when pressed, operate hammers that strike wires to produce sound.

Necessary Condition

A condition that must be present for an event or entity to occur or exist; without it, the event or entity cannot occur or exist.