A.{38,46,79,56,40,84} B.{38,79,56,46,40,84} C.{40,38,46,79,56,84} D.{38,46,56,79,40,84}
A.起泡排序B.希爾排序C.堆排序D.快速排序
A.3 B.4 C.5 D.6