元素A、B、C依次进栈,中间允许出栈,若出栈序列为BCA,经过栈的操作是 ( )。
A、push pushpushpop poppop;
B、push push pop pushpoppop;
C、pushpop push pop pushpop;
D、pushpop pushpushpop pop
发布时间:2024-11-18 06:20:12
A、push pushpushpop poppop;
B、push push pop pushpoppop;
C、pushpop push pop pushpop;
D、pushpop pushpushpop pop