PLSC 102 Lecture 4: PLSC 102 - Lecture 4

(0) public class ReferenceTest 6 public static void methodSix (int) 1 x){ x[0] = new int [2]; x[0][0] = 0; x(01 (1) = 1; x = new int [10] [5); x[0] (3) = 3; public static void main(String[] args) { int[] O Y = [ {1,2,3}, {2,4}}; methodSix (y); //WHAT ARE THE VALUES IN THE ARRAY OF ARRAYS //REFERRED TO BY Y AT THIS POINT? (ANSWER IN CHART)

3. What is printed to the screen when the following program is run? (6 points) public class Alias Test { public static void main(String[] args) { int) foo = {1,2,3,4,5}; int[] bar = {20, 21, 22, 23); int) chocolate = bar; bar[0] = 30; chocolate [1] = chocolate [0] + foo(0); System.out.println("Phase 1"); System.out.println (bar[0]); System.out.println (chocolate[0]); System.out.println (foo [0]); System.out.println (bar[1]); bar - foo; foo - chocolate; foo [31 - foo [2] + foo[1]; System.out.println("Phase 2"); System.out.println (foo [1]); System.out.println (foo [2]); System.out.println (foo [3]); foo = new int [10); foo [0] = 3; System.out.println("Phase 3"); System.out.println(chocolate[0]); System.out.println (chocolate[1]); System.out.println(chocolate[21); System.out.println(chocolate[3]); //WHAT IS PRINTED TO THE SCREEN IN THIS RUN? What is printed to the screen when the above program is run?

20. How many times does the letter D print in the following code? for (int i = 0; i < 3; i++) { for (int j = i+1; j < 3; j++) System.out.println("D"); { (A) 3 (B) 0 (C) 6 (D) 1 (E) 2