Aufgabenblatt 5

src/MassiveForceHashMap.java

@@ -0,0 +1,72 @@
+// A hash map that associates a 'Massive'-object with a Vector3 (typically this is the force
+// exerted on the object). The number of key-value pairs is not limited.
+//
+public class MassiveForceHashMap {
+
+    // TODO: define missing parts of this class.
+
+    // Initializes 'this' as an empty map.
+    public MassiveForceHashMap() {
+
+        // TODO: implement constructor.
+    }
+
+    // Adds a new key-value association to this map. If the key already exists in this map,
+    // the value is replaced and the old value is returned. Otherwise 'null' is returned.
+    // Precondition: key != null.
+    public Vector3 put(Massive key, Vector3 value) {
+
+        // TODO: implement method.
+        return null;
+    }
+
+    // Returns the value associated with the specified key, i.e. the method returns the force vector
+    // associated with the specified key. Returns 'null' if the key is not contained in this map.
+    // Precondition: key != null.
+    public Vector3 get(Massive key) {
+
+        // TODO: implement method.
+        return null;
+    }
+
+    // Returns 'true' if this map contains a mapping for the specified key.
+    public boolean containsKey(Massive key) {
+
+        // TODO: implement method.
+        return false;
+    }
+
+    // Returns a readable representation of this map, with all key-value pairs. Their order is not
+    // defined.
+    public String toString() {
+
+        // TODO: implement method.
+        return "";
+    }
+
+    // Compares `this` with the specified object for equality. Returns `true` if the specified
+    // `o` is not `null` and is of type `MassiveForceHashMap` and both `this` and `o` have equal
+    // key-value pairs, i.e. the number of key-value pairs is the same in both maps and every
+    // key-value pair in `this` equals one key-value pair in `o`. Two key-value pairs are
+    // equal if the two keys are equal and the two values are equal. Otherwise `false` is returned.
+    public boolean equals(Object o) {
+
+        // TODO: implement method.
+        return false;
+    }
+
+    // Returns the hashCode of `this`.
+    public int hashCode() {
+
+        //TODO: implement method.
+        return 0;
+    }
+
+    // Returns a list of all the keys in no specified order.
+    public MassiveLinkedList keyList() {
+
+        // TODO: implement method.
+        return null;
+    }
+
+}