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  1. (define (f n)
  2.  (do ((d (do ((i (- n 1) (- i 1))
  3.               (d '() (cons i d)))
  4.              ((< i 0) d))
  5.          (append (cddr d) (list (car d)))))
  6.      ((null? (cdr d)) (car d))))
  7. (display (f 21))
  8. (display (f 22))
  9. (display (f 23))
  10. (display (f 24))
  11. (display (f 25))
Success #stdin #stdout 0.04s 0KB
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stdin 
Standard input is empty
stdout 
1012141618
https://ideone.com/eK9vO
language:
Scheme (guile 2.2.4)
created:
14 years ago
visibility:
public

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