solved Task 1

src/ch/zhaw/ads/Competitor.java

@@ -49,19 +49,25 @@ public class Competitor implements Comparable<Competitor> {
     @Override
     public int compareTo(Competitor o) {
         // TODO Implement
-        return  0;
+        Competitor o2 = (Competitor)o;
+        return (int) (this.parseTime(time) - o.parseTime(o2.getTime()));
     }
 
     @Override
     public boolean equals (Object o) {
         // TODO Implement
+        if(o instanceof Competitor){
+            Competitor o2 = (Competitor)o;
+            return compareTo(o2) == 0;
+        }
         return false;
     }
 
     @Override
     public int hashCode() {
         // TODO Implement
-        return 0;
+        int result = 17;
+        return result * (int)parseTime(time);
     }
 
 }