class ComparableNode<T extends Comparable<T>>
    implements Comparable<ComparableNode<T>> {
    private T data;
    private ComparableNode<T> next;
    public ComparableNode(T payload){
        data=payload;
        next=null;
    }
    public ComparableNode<T> getNext(){
        return next;
    }

    public void setNext(ComparableNode<T> val){
        next=val;
    }

    public T getData(){
        return data;
    }
    public int compareTo(ComparableNode<T> other){
        return data.compareTo(other.data);
    }
}