快速排序的递归解演示，用20个字符串代表20个数，显示每次分组结果，延时10000。如果在你的机子上太快，可以加长延时。-rapid sequencing of recursive solution demonstrations, with 20 representatives of 20 string number, the results show that each packet, Delay 10000. If your machine on too fast, it could be