import java.util.HashMap;
import java.io.*;
-public class AltosRecord {
+public class AltosRecord implements Comparable <AltosRecord> {
final static int MISSING = 0x7fffffff;
static final int seen_flight = 1;
return null;
}
+ public int compareTo(AltosRecord o) {
+ return tick - o.tick;
+ }
+
public AltosRecord(AltosRecord old) {
version = old.version;
seen = old.seen;