solved Task 2

src/ch/zhaw/ads/MyCompetitor.java

@@ -48,18 +48,23 @@ public class MyCompetitor implements Comparable<MyCompetitor> {
     @Override
     public int compareTo(MyCompetitor o) {
         // to be done
-        return -1;
+        int rankDiff = rank - o.rank;
+        int nameDiff = name.compareTo(o.name);
+        return 10000 * rankDiff + nameDiff;
     }
 
     @Override
     public int hashCode() {
         // to be done
-        return -1;
+        return rank % 3500 + name.hashCode() ;
     }
 
     @Override
     public boolean equals (Object o) {
         // to be done
-        return false;
+        if(! (o instanceof MyCompetitor)){
+            return false;
+        }
+        return compareTo((MyCompetitor) o) == 0;
     }
 }