public class UnbalancedCoin {

  public static void main (String[] argv)
  {
    try {
      if ( (argv == null) || (argv.length != 2) ) {
        System.out.println ("Usage: UnbalancedCoint <numTrials> <prob-heads>");
        System.exit(1);
      }
      
      int numTrials = Integer.parseInt (argv[0]);
      double probHeads = Double.parseDouble (argv[1]);

      performTrials (numTrials, probHeads);
    }
    catch (Exception e) {
      e.printStackTrace();
    }
  }
  
  static void performTrials (int numTrials, double probHeads)
  {
    int numHeads = 0;
    for (int i=0; i<numTrials; i++) {
      if (UniformRandom.uniform() < probHeads) {
        // Heads.
        numHeads ++;
      }
    }
    
    System.out.println ("Estimated prob(heads): " + ((double)numHeads / (double)numTrials));
    System.out.println ("Actual:                " + probHeads);
  }

}