最佳答案：比如说链表a -> b -> c -> d表头是a，表尾是d。就地逆置的意思就是变成：a next = &b;b->next = &c;c->next = &d;d-&g
比如说链表a -> b -> c -> d表头是a，表尾是d。就地逆置的意思就是变成：a next = &b;b->next = &c;c->next = &d;d->next = 0;逆置后：b->next = &a;c->next = &b;d->next = &c;a->next = 0;所谓就地逆置，就是在操作中，遇到a->next = &b;的情况，那么改写为b->next = &a;
