public static void main(String[] args) {
Snake s = new Snake(5, 'a');
System.out.println("s = " + s);
Snake s2 = (Snake) s.clone();
System.out.println("s2 = " + s2);
s.increment();
System.out.println("after s.increment, s2 = " + s2);
monitor.expect(
new String[] {"s = :a:b:c:d:e", "s2 = :a:b:c:d:e", "after s.increment, s2 = :a:c:d:e:f"});
}
public String toString() {
String s = ":" + c;
if (next != null) s += next.toString();
return s;
}
public void increment() {
c++;
if (next != null) next.increment();
}