//獲取數組中的隨機數//HF.Math.RandomNumbers是前綴，可以自己定義，主要看邏輯代碼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;}