public class UnbalancedDie {

  static double[] probs = {0.1, 0.2, 0.3, 0.15, 0.13, 0.12};

  public static void main (String[] argv)
  {
    try {
      if ( (argv == null) || (argv.length != 1) ) {
        System.out.println ("Usage: UnbalancedCoint <numTrials>");
        System.exit(1);
      }
      
      int numTrials = Integer.parseInt (argv[0]);

      performTrials (numTrials);
    }
    catch (Exception e) {
      e.printStackTrace();
    }
  }

  static void performTrials (int numTrials)
  {
    int[] bins = new int [7];

    for (int i=0; i<numTrials; i++) {
      int dieValue = randomDieThrow ();
      bins[dieValue] ++;
    }

    System.out.println ("Histogram:");
    System.out.println ("  Number   Prob    Estimate");
    for (int i=1; i<=6; i++) {
      System.out.println ("    " + i + "    " + probs[i-1] + "    " + ( (double)bins[i]/(double)numTrials));
    }
  }
  
  static int randomDieThrow ()
  {
    // INSERT YOUR CODE HERE
  }
  
}