Reorganised projects

1 files changed, 81 insertions, 0 deletions

diff --git a/Week5 Quiz/src/week5/MCQuestion.java b/Week5 Quiz/src/week5/MCQuestion.java
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+++ b/Week5 Quiz/src/week5/MCQuestion.java
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+package week5;
+
+import java.util.Random;
+
+/**
+ * Class for multiple choice questions
+ * 
+ * Note: for 2-choice questions the TCQuestion class should be used.
+ * 
+ * @author Camil Staps, s4498062
+ */
+public class MCQuestion extends Question {
+    
+    protected final String[] answers;
+    protected final int correctAnswer;
+    
+    /**
+     * Construct a new instance
+     * 
+     * @param question the question
+     * @param answers array of the answer
+     * @param correctAnswer index for answers pointing to the correct answer
+     * @param weight weight of the question
+     */
+    public MCQuestion (String question, String[] answers, int correctAnswer, int weight) {
+        this.question = question;
+        this.answers = answers;
+        this.correctAnswer = correctAnswer;
+        setWeight(weight);
+    }
+    
+    /** See the javadoc on the constructor above */
+    public MCQuestion (String question, String[] answers, int correctAnswer) {
+        this.question = question;
+        this.answers = answers;
+        this.correctAnswer = correctAnswer;
+    }
+
+    @Override
+    public boolean isCorrect(String answer) {
+        return correctAnswer == (answer.charAt(0) - 'A');
+    }
+
+    @Override
+    public String juisteAntwoord() {
+        return answers[correctAnswer];
+    }
+    
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder(super.toString());
+        sb.append("\n");
+        int i = 0;
+        for (String a : answers) {
+            sb.append((char) ('A' + i++)).append(": ").append(a).append("\n");
+        }
+        sb.deleteCharAt(sb.length() - 1);
+        return sb.toString();
+    }
+    
+    /**
+     * For this type of questions, duplicating randomizes the order of the answers.
+     * 
+     * @return A new instance of the MCQuestion class with the same parameters, just another order of the answers.
+     */
+    @Override
+    public Question duplicate() {
+        Random r = new Random();
+        int shift = r.nextInt(answers.length - 1) + 1;
+        
+        String[] new_answers = new String[answers.length];
+        for (String a : answers) {
+            new_answers[shift++ % answers.length] = a;
+        }
+        
+        int new_correctAnswer = (correctAnswer + shift) % answers.length;
+        
+        return new MCQuestion(question, new_answers, new_correctAnswer, weight);
+    }
+    
+}