关于LISP的问题

Question

我正在使用Racket学习LISP！ 我在解决这三个问题时遇到了问题。

1）（香蕉（Jane有一个后院））

2）（香蕉和简）

3）（（（香蕉）和（（简）））在她的后院）

以上面的列表形式，我怎么才能得到Jane？ （使用汽车/司机）

Answer 1

转到DrRacket中的“交互”窗口，然后将car和cdr的各种组合应用到每个列表中。

示例：

> (car '(banana in (Jane has a backyard)))
'banana
> (cdr '(banana in (Jane has a backyard)))
'(in (Jane has a backyard))
> (car (cdr '(banana in (Jane has a backyard))))
'in
> (cdr (cdr '(banana in (Jane has a backyard))))
'((Jane has a backyard))
> (cdr (cdr (cdr '(banana in (Jane has a backyard)))))
'()
> (car (cdr (cdr '(banana in (Jane has a backyard)))))
'(Jane has a backyard)

我很确定你可以从这里接管......