A Queue Based on a Linked List Uses the Following

question 36

Multiple Choice

A queue based on a linked list uses the following code
Class Node{
String element;
Node next;
Node (String el,Node n) {
Element = el;
Next = n;
}
}
Node front = null,rear = null;
What is the right code for void add(String x) operation? Such an operation adds x to the queue

• A) rear = new Node(x,null);
• B) rear = new Node(x,null.;rear = rear.next;
• C) if (rear != null.
• {
• Rear.next = new Node(x,null.;
• Rear = rear.next;
• }
• Else
• {
• Rear = new Node(x,null.;
• Front = rear;
• }
• D) if (rear != null.
• {
• Rear.next = new Node(x,null.;
• Rear = rear.next;
• }
• Else
• {
• Rear.next = new Node(x,null.;
• Front = rear;
• }

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Definitions:

Sample Correlation Coefficient

A numerical value that determines both the magnitude and direction of a straight-line association between two variables measured quantitatively in a given sample.

Dependent Variable

The outcome factor whose variations are studied to determine the effect of one or more independent variables.

Independent Variable

A variable presumed to influence or determine the value of another variable, often called the dependent variable.

Coefficient Of Correlation

A statistical measure that calculates the strength and direction of a linear relationship between two quantitative variables, ranging from -1 to 1.