//获取数组中的随机数
//HF.Math.RandomNumbers是前缀，可以自己定义，主要看逻辑代码
HF.Math.RandomNumbers = function (startNum, endNum, count, repeat) {
  var ret = [];
  if (repeat) {
    for (var i = 0; i < count; i++) {
      ret[i] = HF.Math.Random(startNum, endNum);
    }
    return ret;
  }
  var tmp = [];
  var i = 0;
  for (var s = startNum; s <= endNum; s++) {
    tmp[i++] = s;
  }
  var l = tmp.length;
  for (i = 0; i < count; i++) {
    ret[i] = HF.Array.Remove(tmp, HF.Math.Random(0, --l));
  }
  return ret;
}