public synchronized int removeLast() { if (isEmpty()) return 0; return remove(header.link_prev.key); }
public synchronized int removeFirst() { if (isEmpty()) return 0; return remove(header.link_next.key); }
public synchronized int removeFirst() { if (isEmpty()) return 0; return remove(header.link_next.key); }
public synchronized int removeLast() { if (isEmpty()) return 0; return remove(header.link_prev.key); }
public synchronized int removeLast() { if (isEmpty()) return 0; return remove(header.link_prev.key); }
public synchronized int removeLast() { if (isEmpty()) return 0; return remove(header.link_prev.key); }
public synchronized int removeFirst() { if (isEmpty()) return 0; return remove(header.link_next.key); }
public synchronized int removeLast() { if (isEmpty()) return 0; return remove(header.link_prev.key); }
public synchronized int removeFirst() { if (isEmpty()) return 0; return remove(header.link_next.key); }
public synchronized int removeFirst() { if (isEmpty()) return 0; return remove(header.link_next.key); }
public synchronized int removeFirst() { if (isEmpty()) return 0; return remove(header.link_next.key); }
public synchronized int removeFirst() { if (isEmpty()) return 0; return remove(header.link_next.key); }
public synchronized int removeLast() { if (isEmpty()) return 0; return remove(header.link_prev.key); }
public synchronized int removeLast() { if (isEmpty()) return 0; return remove(header.link_prev.key); }
public synchronized int removeFirst() { if (isEmpty()) return 0; return remove(header.link_next.key); }
public synchronized int removeLast() { if (isEmpty()) return 0; return remove(header.link_prev.key); }