Android 双色球机选算法

/*
     * 双色球机选算法
     *
     */

    public void doClick(View view) {
  TextView tv1 = (TextView) findViewById(R.id.textView1);
  TextView tv2 = (TextView) findViewById(R.id.textView2);

  String[] red = {
    "01","02","03","04","05","06","07","08","09","10",
    "11","12","13","14","15","16","17","18","19","20",
    "21","22","23","24","25","26","27","28","29","30",
    "31","32","33"
  };
  String[] blue = {
    "01","02","03","04","05","06","07","08","09","10",
    "11","12","13","14","15","16"
  };

  boolean[] flags = new boolean[red.length];
  String[] redResult = new String[6];

  // 选红球
  for(int i=0;i<redResult.length;i++) {
   int index;
   do {
    index = new Random().nextInt(red.length);
   } while(flags[index]);

   flags[index] = true;

   redResult[i] = red[index];
  }

  // 选蓝球
  String blueResult = blue[new Random().nextInt(blue.length)];

  // 显示
  tv1.setText(Arrays.toString(redResult));
  tv2.setText(blueResult);
}

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