import java.util.Random;
 /**
  * Provide control over the randomization of the simulation.
  *
  * @author Yemima Sutanto
  * @version 1.0 (22 November 2018)
  */
 public class Randomizer
 {
   // The default seed for control of randomization.
   private static final int SEED = 1111;
   // A shared Random object, if required.
   private static final Random rand = new Random(SEED);
   // Determine whether a shared random generator is to be provided.
   private static final boolean useShared = true;
   /**
    * Constructor for objects of class Randomizer
    */
   public Randomizer()
   {
   }
   /**
    * Provide a random generator.
    * @return A random object.
    */
   public static Random getRandom()
   {
     if(useShared) {
       return rand;
     }
     else {
       return new Random();
     }
   }
   /**
    * Reset the randomization.
    * This will have no effect if randomization is not through
    * a shared Random generator.
    */
   public static void reset()
   {
     if(useShared) {
       rand.setSeed(SEED);
     }
   }
 }