{"id":1485,"date":"2015-05-27T06:00:28","date_gmt":"2015-05-27T04:00:28","guid":{"rendered":"http:\/\/www.glc.us.es\/~jalonso\/exercitium\/?p=1485"},"modified":"2015-06-13T16:26:20","modified_gmt":"2015-06-13T14:26:20","slug":"calculo-de-aprobados","status":"publish","type":"post","link":"https:\/\/www.glc.us.es\/~jalonso\/exercitium\/calculo-de-aprobados\/","title":{"rendered":"C\u00e1lculo de aprobados"},"content":{"rendered":"<p>La notas de un examen se pueden representar mediante un vector en el que los valores son los pares formados por los nombres de los alumnos y sus notas.<\/p>\n<p>Definir la funci\u00f3n<\/p>\n<pre lang=\"text\">\n   aprobados :: (Num a, Ord a) => Array Int (String,a) -> Maybe [String]\n<\/pre>\n<p>tal que (aprobados p) es la lista de los nombres de los alumnos que han aprobado y Nothing si todos est\u00e1n suspensos. Por ejemplo,<\/p>\n<pre lang=\"text\">\n   ghci> aprobados (listArray (1,3) [(\"Ana\",5),(\"Pedro\",3),(\"Lucia\",6)])\n   Just [\"Ana\",\"Lucia\"]\n   ghci> aprobados (listArray (1,3) [(\"Ana\",4),(\"Pedro\",3),(\"Lucia\",4.9)])\n   Nothing\n<\/pre>\n<h4>Soluciones<\/h4>\n<pre lang=\"haskell\">\nimport Data.Array\n\naprobados :: (Num a, Ord a) => Array Int (String,a) -> Maybe [String]\naprobados p | null xs   = Nothing\n            | otherwise = Just xs\n    where xs = [x | (x,n) <- elems p, n >= 5]\n<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>La notas de un examen se pueden representar mediante un vector en el que los valores son los pares formados por los nombres de los alumnos y sus notas. Definir la funci\u00f3n aprobados :: (Num a, Ord a) => Array Int (String,a) -> Maybe [String] tal que (aprobados p) es la lista de los nombres&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"footnotes":"","_jetpack_memberships_contains_paid_content":false},"categories":[5],"tags":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.glc.us.es\/~jalonso\/exercitium\/wp-json\/wp\/v2\/posts\/1485"}],"collection":[{"href":"https:\/\/www.glc.us.es\/~jalonso\/exercitium\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.glc.us.es\/~jalonso\/exercitium\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.glc.us.es\/~jalonso\/exercitium\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.glc.us.es\/~jalonso\/exercitium\/wp-json\/wp\/v2\/comments?post=1485"}],"version-history":[{"count":4,"href":"https:\/\/www.glc.us.es\/~jalonso\/exercitium\/wp-json\/wp\/v2\/posts\/1485\/revisions"}],"predecessor-version":[{"id":1511,"href":"https:\/\/www.glc.us.es\/~jalonso\/exercitium\/wp-json\/wp\/v2\/posts\/1485\/revisions\/1511"}],"wp:attachment":[{"href":"https:\/\/www.glc.us.es\/~jalonso\/exercitium\/wp-json\/wp\/v2\/media?parent=1485"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.glc.us.es\/~jalonso\/exercitium\/wp-json\/wp\/v2\/categories?post=1485"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.glc.us.es\/~jalonso\/exercitium\/wp-json\/wp\/v2\/tags?post=1485"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}