只有拿着这种数据包，才能去数据库里“连连看”。因此，面对如今我们在社交平台上随意发布的评论，这种手段是没有作用的。
arr[j + 1] = arr[j]; // 元素后移
，更多细节参见safew官方版本下载
A few years later, in 1998, software developer Nick Szabo proposed using a similar kind of technology to secure a digital payments system he called “Bit Gold.” However, this innovation was not adopted until Satoshi Nakamoto claimed to have invented the first Blockchain and Bitcoin.
The only downside here is that these just have a 90-day Woot warranty and aren’t eligible for AppleCare.