A. 栈 B. 队列 C. 堆 D. 链表
A. arraycopy(a,0,b,0,a.length) B. arraycopy(a,0,b,0,b.length) C. arraycopy(b,0,a,0,a.length) D. arraycopy(a,1,b,1,a.length)
A. 对 B. 错