final_key - 1 of 9 CSE 142, Winter 2008 Final Exam Key 1....

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Unformatted text preview: 1 of 9 CSE 142, Winter 2008 Final Exam Key 1. Expressions Expression 102 / 20 / 2.0 * 2 + 100 / 30 / 2 27 % 4 + 6 % 6 + 5 % 20 "\"" + (3 + 3 * 3 + "" + 3 + 3 * 3 + "\"") !(42 > 10 && (2 > 3 || 4 < 5)) (2 == 3) == (4 == 5) Value 6.0 8 "\"1239\"" false true 2. Array Mystery Expression int a1 = {1, 8, 3, 8, 7}; arrayMystery(a1); int a2 = {4, 0, 0, 4, 0, 0, 4, 0}; arrayMystery(a2); int a3 = {9, 8, 7, 6, 4, 6, 2, 9, 9}; arrayMystery(a3); int a4 = {42}; arrayMystery(a4); int a5 = {5, 5, 5, 6, 5, 5, 5}; arrayMystery(a5); Final Contents of Array [1, 10, 5, 10, 7] [4, 0, 2, 4, 0, 2, 4, 0] [11, 8, 7, 8, 6, 8, 2, 9, 11] [44] [7, 7, 7, 8, 7, 7, 7] 3. Inheritance Mystery Lois a Meg a Lois b Meg Lois a Meg a Stewie a Lois a Meg a Stewie a Brian b Brian Stewie Meg a Meg b Meg Lois a Meg a Lois a Meg a Brian b Brian 2 of 9 4. File Processing (five solutions shown) public static void pizza(Scanner input) { while (input.hasNextLine()) { String line = input.nextLine(); Scanner lineScan = new Scanner(line.toLowerCase()); double boxes = 0.0; int totalBoxes = 0; while (lineScan.hasNext()) { totalBoxes++; String box = lineScan.next(); if (box.equals("whole")) { boxes++; // 1 } else if (box.equals("half")) { boxes += 0.5; // 1/2 } else { // "slice" boxes += 0.125; // 1/8 } } System.out.println((int) Math.ceil(boxes) + " / " + totalBoxes + " pizza boxes used"); } } public static void pizza(Scanner input) { while (input.hasNextLine()) { Scanner lineScan = new Scanner(input.nextLine().toLowerCase()); int slices = 0; int totalBoxes = 0; while (lineScan.hasNext()) { totalBoxes++; String box = lineScan.next(); if (box.equals("whole")) { slices += 8; } else if (box.equals("half")) { slices += 4; } else { slices++; } } // round up to an even box int boxes = slices / 8; if (slices % 8 != 0) { boxes++; } System.out.println(boxes + " / " + totalBoxes + " pizza boxes used"); System....
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This note was uploaded on 04/08/2008 for the course CSE 142 taught by Professor Martystepp during the Winter '07 term at University of Washington.

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final_key - 1 of 9 CSE 142, Winter 2008 Final Exam Key 1....

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