/**
 * An oracle for numeric guessing games.  You tell the oracle the number,
 * and the oracle can answer questions about guesses.
 *
 * @author Samuel A. Rebelsky
 * @version 1.0 of January 1999
 */
public class NumberGameOracle {
  // +--------+------------------------------------------------------------
  // | Fields |
  // +--------+

  /** The number we're trying to guess. */
  long solution;
  
  
  // +--------------+------------------------------------------------------
  // | Constructors |
  // +--------------+

  /**
   * Create a new oracle who knows that the solution is the given value.
   */
  public NumberGameOracle(long solution) {
    this.solution = solution;
  } // NumberGameOracle
 
 
  // +---------+-----------------------------------------------------------
  // | Methods |
  // +---------+

  /** 
   * Check if a guess is correct.
   */
  public boolean isCorrect(long guess) {
    return guess == solution;
  } // isCorrect(long)

  /**
   * Check if a guess is too small.
   */
  public boolean isSmall(long guess) {
    return guess < solution;
  } // isSmall(long)
  
  /**
   * Check if a guess is too large.
   */
  public boolean isLarge(long guess) {
    return guess > solution;
  } // isLarge(long)
} // class NumberGameOracle