(define (A x y) (cond ((= y 0) 0) ((= x 0) (* 2 y)) ((= y 1) 2) (else (A (- x 1) (A x (- y 1))))))
(A 1 10)
(A 2 4)
(A 3 3)
(define (f n) (A 0 n))(f 0)(f 1)(f 2)(f 3)
没搞懂这题有什么意思
转载于:https://www.cnblogs.com/R4mble/p/7880994.html
