A.94,32,40,90,80,46,21,69 B.21,32,46,40,80,69,90,94 C.32,40,21,46,69,94,90,80 D.90,69,80,46,21,32,94,40
A.從小到大排列好的 B.從大到小排列好的 C.元素無序 D.元素基本有序
A.1 B.2 C.n-1 D.n