摘要： ![sicp每日一题[2.67-2.68]](https://img2024.cnblogs.com/blog/3223467/202411/3223467-20241103085853336-952111968.png)
Exercise 2.67 Define an encoding tree and a sample message: (define (make-leaf-set pairs) (if (null? pairs) '() (let ((pair (car pairs))) (adjoin-set 阅读全文
Exercise 2.67 Define an encoding tree and a sample message: (define (make-leaf-set pairs) (if (null? pairs) '() (let ((pair (car pairs))) (adjoin-set 阅读全文