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# 2011SSTestAnswers - THE UNIVERSITY OF AUCKLAND SUMMER...

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Unformatted text preview: THE UNIVERSITY OF AUCKLAND SUMMER SEMESTER, 2011 Campus: City COMPUTER SCIENCE TEST Principles of Programming (Time Allowed: 75 minutes) NOTE: You must answer all questions in this test. No calculators are permitted Answer in the space provided in this booklet. There is space at the back for answers that overflow the allotted space. Surname Forenames Student ID Login (UPI) Lab Time Q1 (/12) Q4 (/10) Q7 (/7) Q10 (/8) Q2 (/9) Q5 (/6) Q8 (/10) Q11 (/8) Q3 (/12) Q6 (/8) Q9 (/10) Total /100 Question/Answer Sheet - Page 2 - CompSci 101 SURNAME: ...................................................... FORENAMES: ........................................................... Question 1 (12 marks) a) What is the output produced by the following code? int a = 4; int b = 6; double c = b % a; System.out.println(a + a + ", " + b * c + 1); 8, 12.01 (2 marks) b) What is the output produced by the following code? int a = 1; double b = a + 0.1; System.out.println("" + a + b + (int) b); 11.11 (2 marks) Question/Answer Sheet - Page 3 - CompSci 101 SURNAME: ...................................................... FORENAMES: ........................................................... c) What is the output produced by the following code? double factor = 0.99; int max = 10; int result = (int) factor * max + 2; System.out.println(result); 2 (2 marks) d) What is the output produced by the following code? String letters = "ABCDEFGH"; int n1 = letters.indexOf('B'); int n2 = letters.indexOf('E'); int n3 = letters.length(); System.out.println(n1 + n2 + letters.substring(0, n2) + n3); 5ABCD8 (2 marks) Question/Answer Sheet - Page 4 - CompSci 101 SURNAME: ...................................................... FORENAMES: ........................................................... e) What is the output produced by the following code? String a = new String("abcd"); String b = new String("aBcD"); String c = new String("ABCD"); String d = b.toLowerCase(); if ( a == d ) { System.out.println("1"); } if ( a.substring(0,2).equals( d.substring(0,2) ) ) { System.out.println("2"); } if ( b.substring(1,2).equals( c.substring(1,2) ) ) { System.out.println("3"); } 2 3 (2 marks) f) What is the output produced by the following code? int a = 1; int b = 2; String s = a + "(" + (a == b) + ")" + b; System.out.println(s.length()); 9 (2 marks) Question/Answer Sheet - Page 5 - CompSci 101 SURNAME: ...................................................... FORENAMES: ........................................................... Question 2 (9 marks) a) Complete the header for the process() method. private String process ( int a, boolean b) { int c; if (b) { c = a / 2; } else { c = a * 2; } return c + "-" + b; } (3 marks) b) Complete the header for the process() method....
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2011SSTestAnswers - THE UNIVERSITY OF AUCKLAND SUMMER...

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