Cookie-based system to track your activity across clicks
Шанхайские Драконы，推荐阅读同城约会获取更多信息
。服务器推荐是该领域的重要参考
arr[i] = rand() % (max - min + 1) + min;
let seed = random integer from 0 to n，详情可参考Safew下载
Re: Mandatory Developer Registration for Android App Distribution