POLB91H3 Final: final study guide

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lavendercrow556

13 Dec 2010

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The final exam is worth 40% of your final grade. It will be held thursday, april 15th from 7:00 p. m. 9:00 p. m. in ac223. The first section will be comprised of 6 short-answer questions worth 10 points each, for a total of. You will have a choice of 10 short-answer questions. The second section of the exam is one essay question worth 40 points. The questions will test your familiarity with the lecture material and reading assignments as well as your ability to apply what you have learned. You will need to outline the major issues and debates surrounding these topics. They will appear in question format on the exam. You will be expected to write your answers in the exam booklets provided. Point form answers are acceptable as long as they are based on fully developed ideas (as opposed to one-word answers). One of the following essay questions will appear on the final exam.

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Short Answer & Multiple Choice (2 points each) For all of the 'what prints' questions in this section, if you believe that nothing will print as a result of exe- cuting the sample code, write 'N/A. We are not evaluating the difference between System.out.print and System.out.println 9. What is the value of x? double x = (double) (1/2) + (1/2) + (double) (1/2);

2. In this section you will be shown several classes. Inside the code for each class will be a question. You should provide your answer to the question inside the chart. Many of the questions will ask you whether a variable has changed or not. In cases that the variable being asked about is a primitive type, you should provide your answer based on the data stored in the primitive type. In cases that the variable being asked about is a reference type, you should provide your answer based on the data stored at the Object linked to by the reference type. For example, in the first snippet, the question asks about the variable x defined in the main method. Since x is a primitive type, you should answer YES if you think the variable x has had its value changed after the method methodOne() returns. All your answers should go in the chart below: (9 points) Part Answer to question x changed (circle one)? YES NO y changed (circle one)? a changed (circle one)? b changed (circle one)? d1 a changed (circle one)? b changed (circle one)? YES e words changed (circle one)? YES NO Values in array of array referred to by y: What is printed to the screen? (a) public class ReferenceTesti public static void methodOne (int x){ x++; public static void main(String[args) { int x = 0; methodOne (x); //IS THE DATA STORED OR REFERRED TO BY X THE SAME? (ANSWER IN CHART)

Longer multiple choice questions (3 points each) Coding Question - Fibonacci sequence You are to write a method named "Fibo" that takes as input an integer n, and returns the nth number in the Fibonacci sequence. If Fibo (n) denotes the nth number in the Fibonacci sequence, then recall for n > 2, Fibo (n) = Fibo (n-1) + Fibo (n-2), and Fibo (1) = 1 and Fibo (2) = 1. You are to assume that the user is always going to enter an input greater than 2. For example Fibo (4) = 3. Use the 7 following questions to "write" your code. Pay close attention to how your answers group together with each other. 26. Line 1 (A) public static int Fibo (int n) { (B) public static void main(String[] args) { (C) public static int Fibo () { (D) public static void Fibo (Double input) { (E) public static void Fibo (int n) {

POLB91H3 Final: final study guide

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