不过在上手后，我发现这位昔日机皇，依旧有可取之处。
Cordless vacuum suction power is typically measured in air wattage (AW), but you’ll see some that list the power of the motor in wattage (W) instead. Typically the higher the air or motor wattage the stronger the suction power, offering improved cleaning performance. And often strength is proportional to price — more expensive cordless vacuums tend to have stronger suction power. A general rule of thumb is that those with precocious pets or mess-making children would benefit from a cordless stick vacuum cleaner with stronger-than-average suction power.，详情可参考免实名服务器
testSort(quickSort, "Quick", arr, N);，更多细节参见手游
So here's the TL;DR:，推荐阅读超级工厂获取更多信息