package username.lists;

/**
 * Lists in which the client controls the relationship between positions
 * and values.
 *
 * @author Samuel A. Rebelsky
 * @author CSC152 2006S
 * @version 1.0 of April 2006
 */
public interface SequencedList<V>
  extends SimpleList<V>
{
  /**
   * Add a value after a specified position.
   *
   * @pre
   * @post
   */
  public void addAfter(Position pos, V value);

  /**
   * Add a value before a specified position.
   *
   * @pre
   * @post
   */
  public void addBefore(Position pos, V value);

  /**
   * Replace the value at a specified position.
   *
   * @pre
   * @post
   */
  public void replace(Position pos, V newValue);

  /**
   * Swap the values at pos1 and pos2.
   *
   * @pre
   * @post
   */
  public void swap(Position pos1, Position pos2);

} // interface SequencedList<V>