Add: assignment 2 close #2

assignment2/Question1/HalfMarathon.java

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+/*
+ * Author: CHEN Yongyuan (Walter) 1930006025 from OOP(1007)
+ * Date: 2022/03/04
+ * Description: This is the Running class which is the subclass of the Sport class
+ */
+
+public class HalfMarathon extends Marathon {
+	/**
+	 * Constructor. Half marathon always has player number 99 and length of 21.0975
+	 */
+	public HalfMarathon() {
+		super(99, 21.0975);
+	}
+
+	/**
+	 * Test.
+	 */
+	public static void testHalfMarathon() {
+		HalfMarathon hm = new HalfMarathon();
+		System.out.println(hm.getLength() == 21.0975);
+		System.out.println(hm.getPlayerNumber() == 99);
+		System.out.println(hm.isFun() == false);
+	}
+}