Tenting raises the middle of the keyboard up, so your hands move closer to a “handshake” position. Alice keyboards usually angle up towards the middle and always to a fixed degree, since the two sides are connected. Split boards often let you adjust the degree of tenting, going from flat to subtle to extreme lift.
究其原因应与PS Vita本身就没有获得成功有关，而且触摸板设计的抵触等。
，更多细节参见heLLoword翻译官方下载
// 易错点1：边界处理 - 0辆车返回0，1辆车返回1（无需后续计算）
mergeSortRecursive(arr, left, mid); // 排序左半部分