You are on your way to being that new species of mechanized savage, the push-button Neanderthal.

You are on your way to being that new species of mechanized savage, the push-button Neanderthal（para. 9)

Button button=(Button)__________(R.id.button1);

输入序列为ABC，可以变为CBA时，经过的栈操作为: push,pop,push,pop,push,pop|push,pop,push,push,pop,pop|push,push,pop,pop,push,pop|push,push,push,pop,pop,pop

输入序列为abc,若输出序列为bca,经过的栈操作为( ) A: push,pop,push,pop,push,pop B: push,push,push,pop,pop,pop C: push,push,pop,push,pop,pop D: push,pop,push,push,pop,pop

If the suit is buttoned, where should be the stickpin?? Between the first button and the third button of the shirt.|Between the second button and the third button of the shirt.|Between the first button and the second button of the shirt.|Between the second button and the fourth button of the shirt.

设有一个空栈，现有输入序列1，2，3，4，5，经过push，push，pop，push，pop，push，push后，输出序列是_________

设有一个空栈，现有输入序列为1，2，3，4，5，经过PUSH，PUSH，POP，PUSH，POP，PUSH，PUSH后，输出序列是 。

设有一空栈，现有输入序列（1，2，3，4，5），经过push, push, pop, push, pop, push, push, pop, pop, pop后，输出序列是

在空的顺序栈中，依次执行操作：push(a); push(b); pop(); push(x); push(y); pop(); push(z)。栈顶元素是： 。