/*
   This immutable class represents ordered pairs of integers.
*/ 

public class IntegerPair                                         
{

  private int first;     // the first integer of the pair
  private int second;    // the second integer of the pair
       
  
   /** This constructor bundles two given integers
         into an IntegerPair
         @param f the first integer
         @param s the second integer
  */

  public IntegerPair(int f, int s)                  {
    first = f;
    second = s;                                     }
       
    
  /**
      @return the first integer of the pair
   */  
  
  public int getFirst()                             {
    return first;                                   }
         
   
  /**
      @return the second integer of the pair
   */  
  
  public int getSecond()                            {
    return second;                                  }     
    
    
  /**
      @return a string representing the pair
        in conventional ordered pair notation
   */  
  
  public String toString()                          {
    return "(" + first +
           "," + second + ")";                      }
     
}