{"id":892,"date":"2010-08-08T13:28:44","date_gmt":"2010-08-08T11:28:44","guid":{"rendered":"http:\/\/www.guion78.com\/wordpress\/?p=892"},"modified":"2014-04-24T19:37:38","modified_gmt":"2014-04-24T18:37:38","slug":"scheme-ricorsione-di-coda-min-max","status":"publish","type":"post","link":"https:\/\/www.guion78.com\/wordpress\/blog\/2010\/08\/08\/scheme-ricorsione-di-coda-min-max\/","title":{"rendered":"Scheme \u2013 Ricorsione di coda (min, max) \u2013"},"content":{"rendered":"<p>Definisci in Scheme un programma su una procedura ricorsiva di coda, pi\u00f9 eventuali procedure non ricorsive, per trovare minimo e massimo da una lista.<\/p>\n<pre class=\"brush: plain; title: ; notranslate\" title=\"\">\r\n(define mix\r\n  (lambda (m n)\r\n    (if (< m n)\r\n        m\r\n        n)\r\n    ))\r\n\r\n(define max\r\n  (lambda (m n)\r\n    (if (> m n)\r\n        m\r\n        n)\r\n    ))\r\n\r\n(define f\r\n  (lambda (txt)\r\n    (f-tr txt (car txt) (car txt))\r\n    ))\r\n\r\n(define f-tr\r\n  (lambda (t m n)\r\n    (if (null?  (cdr t)) (list m n)\r\n    (f-tr (cdr t) (mix m (mix (car t) (cadr t))) (man n (man (car t) (cadr t))))\r\n    )))\r\n\r\n(f '(2 3 4 1 5 4 3 7 9 10))\r\n<\/pre>\n<p>Altra soluzione assai pi\u00f9 esigua che utilizza molto l\u2019ingegno ;)<\/p>\n<pre class=\"brush: plain; title: ; notranslate\" title=\"\">\r\n(define min-max\r\n  (lambda (nums)\r\n    (min-max-tr (car nums) (car nums) (cdr nums))\r\n    ))\r\n\r\n(define min-max-tr\r\n  (lambda (min max nums)\r\n    (if (null? nums)\r\n        (list min max)\r\n        (min-max-tr\r\n         (if (< (car nums) min) (car nums) min)\r\n         (if (> (car nums) max) (car nums) max)\r\n         (cdr nums))\r\n        )))\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>Definisci in Scheme un programma su una procedura ricorsiva di coda, pi\u00f9 eventuali procedure non ricorsive, per trovare minimo e massimo da una lista. (define mix (lambda (m n) (if (< m n) m n) )) (define max (lambda (m n) (if (> m n) m n) )) (define f (lambda (txt) (f-tr txt (car [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"ngg_post_thumbnail":0,"footnotes":""},"categories":[5,348,396],"tags":[435,847],"class_list":["post-892","post","type-post","status-publish","format-standard","hentry","category-informatica","category-programmazione","category-scheme","tag-ricorsione-di-coda","tag-scheme"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Scheme - Ricorsione di coda (min, max) - Guion Matteo<\/title>\n<meta name=\"description\" content=\"ricorsione di coda scheme\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.guion78.com\/wordpress\/blog\/2010\/08\/08\/scheme-ricorsione-di-coda-min-max\/\" \/>\n<meta property=\"og:locale\" content=\"it_IT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Scheme - 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