2007SSTestAnswers

2007SSTestAnswers - CompSci 101 THE UNIVERSITY OF AUCKLAND...

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CompSci 101 THE UNIVERSITY OF AUCKLAND CONTINUED SUMMER SEMESTER, 2007 Campus: City COMPUTER SCIENCE TEST Principles of Programming (Time allowed: 75 MINUTES) NOTE: Attempt ALL questions Write your answers in the space provided There is space at the back for answers that overflow the allotted space No calculators are permitted Surname: Forenames: Student ID number: Login name:
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Question/Answer Sheet - Page 2 - CompSci 101 SS C SURNAME: . ..................................................... FORENAMES: . .......................................................... CONTINUED CompSci 101 Test Results Question Marks Out of Question 1 28 Question 2 6 Question 3 10 Question 4 5 Question 5 14 Question 6 6 Question 7 6 TOTAL 75
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Question/Answer Sheet - Page 3 - CompSci 101 SS C SURNAME: . ..................................................... FORENAMES: . .......................................................... CONTINUED Question 1 (28 marks) a) What output is produced by the following code? System.out.println(1 + 2 + "3" + 4 + 5); 3345 (2 marks) b) What output is produced by the following code? System.out.println("\"" + "\\nn"); "\nn (2 marks) c) Consider the following boolean expression: (a && b) || (!a) What values would need to be stored in the boolean variables a and b so that this expression evaluates to false ? a = true ; b = false ; (2 marks)
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Question/Answer Sheet - Page 4 - CompSci 101 SS C SURNAME: . ..................................................... FORENAMES: . .......................................................... CONTINUED d) What output is produced by the following code? int a = 1; int b = 2; int c = 3; int d = Math.max(Math.min(a, b), Math.min(b, c)); System.out.println(d); 2 (2 marks) e) What output is produced by the following code? System.out.println((1 + 2 * 3) / 4 + 5); 6 (2 marks) f) What output is produced by the following code? int x = 100; int y = x; x = 10; System.out.print(y); String s = "10"; String t = s.substring(0,1); System.out.println(s + t); 100101 (2 marks)
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Question/Answer Sheet - Page 5 - CompSci 101 SS C SURNAME: . ..................................................... FORENAMES: . .......................................................... CONTINUED g) What output is produced by the following code? int a = 0; int b = 7; a = b; b = a; System.out.println(a + b); 14 (2 marks) h) What output is produced by the following code? int[] nums = { 1, 2, 3, 4, 5 }; nums[0] = nums[3]; nums[1] = nums[2] + nums[4]; nums[2] = nums.length; nums[ nums[1] - nums[2] ] = 10; System.out.print(nums[0] + " "); System.out.print(nums[1] + " "); System.out.print(nums[2] + " "); System.out.print(nums[3] + " "); System.out.print(nums[4] + " "); 4 8 5 10 5 (2 marks)
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Question/Answer Sheet - Page 6 - CompSci 101 SS C SURNAME: . ..................................................... FORENAMES: . ..........................................................
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2007SSTestAnswers - CompSci 101 THE UNIVERSITY OF AUCKLAND...

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