{"id":971,"date":"2015-01-15T06:00:11","date_gmt":"2015-01-15T04:00:11","guid":{"rendered":"http:\/\/www.glc.us.es\/~jalonso\/exercitium\/?p=971"},"modified":"2021-04-25T17:05:55","modified_gmt":"2021-04-25T15:05:55","slug":"mezcla-de-infinitas-listas-infinitas","status":"publish","type":"post","link":"https:\/\/www.glc.us.es\/~jalonso\/exercitium\/mezcla-de-infinitas-listas-infinitas\/","title":{"rendered":"Mezcla de infinitas listas infinitas"},"content":{"rendered":"<p>Definir la funci\u00f3n<\/p>\n<pre lang=\"text\">\n   mezclaTodas :: Ord a => [[a]] -> [a]\n<\/pre>\n<p>tal que (mezclaTodas xss) es la mezcla ordenada de xss, donde tanto xss como sus elementos son listas infinitas ordenadas. Por ejemplo,<\/p>\n<pre lang=\"text\">\n   ghci> take 10 (mezclaTodas [[n,2*n..] | n <- [2..]])\n   [2,3,4,5,6,7,8,9,10,11]\n   ghci> take 10 (mezclaTodas [[n,2*n..] | n <- [2,9..]])\n   [2,4,6,8,9,10,12,14,16,18]\n<\/pre>\n<h4>Soluciones<\/h4>\n<pre lang=\"haskell\">\nmezclaTodas :: Ord a => [[a]] -> [a]\nmezclaTodas = foldr1 xmezcla\n    where xmezcla (x:xs) ys = x : mezcla xs ys\n\nmezcla :: Ord a => [a] -> [a] -> [a]\nmezcla (x:xs) (y:ys) | x < y  = x : mezcla xs (y:ys)\n                     | x == y = x : mezcla xs ys\n                     | x > y  = y : mezcla (x:xs) ys\n<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>Definir la funci\u00f3n mezclaTodas :: Ord a => [[a]] -> [a] tal que (mezclaTodas xss) es la mezcla ordenada de xss, donde tanto xss como sus elementos son listas infinitas ordenadas. Por ejemplo, ghci> take 10 (mezclaTodas [[n,2*n..] | n take 10 (mezclaTodas [[n,2*n..] | n [[a]] -> [a] mezclaTodas = foldr1 xmezcla where xmezcla&#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":[7],"tags":[243,11,90,6],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.glc.us.es\/~jalonso\/exercitium\/wp-json\/wp\/v2\/posts\/971"}],"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=971"}],"version-history":[{"count":6,"href":"https:\/\/www.glc.us.es\/~jalonso\/exercitium\/wp-json\/wp\/v2\/posts\/971\/revisions"}],"predecessor-version":[{"id":6341,"href":"https:\/\/www.glc.us.es\/~jalonso\/exercitium\/wp-json\/wp\/v2\/posts\/971\/revisions\/6341"}],"wp:attachment":[{"href":"https:\/\/www.glc.us.es\/~jalonso\/exercitium\/wp-json\/wp\/v2\/media?parent=971"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.glc.us.es\/~jalonso\/exercitium\/wp-json\/wp\/v2\/categories?post=971"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.glc.us.es\/~jalonso\/exercitium\/wp-json\/wp\/v2\/tags?post=971"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}