摘要： ![sicp每日一题[2.63-2.64]](https://img2024.cnblogs.com/blog/3223467/202410/3223467-20241031084044823-914644384.png)
Exercise 2.63 Each of the following two procedures converts a binary tree to a list. (define (tree->list-1 tree) (if (null? tree) '() (append (tree->l 阅读全文
Exercise 2.63 Each of the following two procedures converts a binary tree to a list. (define (tree->list-1 tree) (if (null? tree) '() (append (tree->l 阅读全文