A. 栈 B. 树 C. 队列 D. --X树
A. ++x,y=x-一 B. x+l=y C. x=x+10--x+y D. double(x)/lO
A. YE BT C. YT D. BY
A. 1,2,3,4,5,6,7,8,9,0, B. 2,1,4,3,6,5,8,7,0,9, C. 0,9,8,7,6,5,4,3,2,l, D. 0,1,2,3,4,5,6,7,8,9,