A.get() B.PutFirst() C.Set() D.addFirst()
A.集合 B.數(shù)組 C.鏈表 D.二叉樹
A.Objectset(intindex,Eelement) B.ObjectSet(intindex,Eelement) C.Objectget(intindex,Eelement) D.Objectadd(intindex,Eelement)