摘要: (define (range n) (define (recur n) (if (= n -1) '() (cons n (recur (- n 1))))) (recur (- n 1)))(define (flatten a)... 阅读全文
posted @ 2014-08-12 14:09 LisPythoniC 阅读(290) 评论(0) 推荐(0) 编辑