[单选题] 用某种排序方法对线性表{25, 84, 21, 47, 15, 27, 68, 35, 20}进行排序时，元素序列的变化情况如下:
(1) 25, 84, 21, 47, 15, 27, 68, 35, 20 .
(2) 20, 15, 21,25, 47, 27, 68, 35, 84
(3) 15, 20, 21, 25, 35, 27, 47, 68, 84
(4) 15, 20, 21, 25,27, 35, 47, 68, 84
则所采用的排序方法是_____。

• A、选择排序
• B、希尔排序
• C、归并排序
• D、快速排序

 纠错