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List Reversal
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| ; 2.18 | |
| (define (reverse list) | |
| (define (iter-list reversed-list unprocessed-remaining) | |
| (if (null? unprocessed-remaining) | |
| reversed-list | |
| (iter-list (cons(car unprocessed-remaining) reversed-list) (cdr unprocessed-remaining)) | |
| ) | |
| ) | |
| (iter-list null list)) | |
| (reverse (list 3 4 5 6)) ;---> 6 4 5 3 |
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