{"id":2068,"date":"2016-02-02T06:00:41","date_gmt":"2016-02-02T04:00:41","guid":{"rendered":"http:\/\/www.glc.us.es\/~jalonso\/exercitium\/?p=2068"},"modified":"2021-04-25T17:25:47","modified_gmt":"2021-04-25T15:25:47","slug":"ordenacion-por-frecuencia-1","status":"publish","type":"post","link":"https:\/\/www.glc.us.es\/~jalonso\/exercitium\/ordenacion-por-frecuencia-1\/","title":{"rendered":"Ordenaci\u00f3n por frecuencia"},"content":{"rendered":"<p>Definir la funci\u00f3n<\/p>\n<pre lang=\"text\">\n   ordPorFrecuencia :: Ord a => [a] -> [a]\n<\/pre>\n<p>tal que (ordPorFrecuencia xs) es la lista obtenidas ordenando los elementos de xs por su frecuencia, de los que aparecen menos a los que aparecen m\u00e1s. Por ejemplo,<\/p>\n<pre lang=\"text\">\n   ordPorFrecuencia \"canalDePanama\"  ==  \"DPcelmnnaaaaa\"\n   ordPorFrecuencia \"20012016\"       ==  \"61122000\"\n<\/pre>\n<h4>Soluciones<\/h4>\n<pre lang=\"haskell\">\nimport Data.List (group, sort)\n\nordPorFrecuencia :: Ord a => [a] -> [a]\nordPorFrecuencia xs =\n    concatMap snd (sort [(length xs,xs) | xs <- group (sort xs)])\n<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>Definir la funci\u00f3n ordPorFrecuencia :: Ord a => [a] -> [a] tal que (ordPorFrecuencia xs) es la lista obtenidas ordenando los elementos de xs por su frecuencia, de los que aparecen menos a los que aparecen m\u00e1s. Por ejemplo, ordPorFrecuencia \u00abcanalDePanama\u00bb == \u00abDPcelmnnaaaaa\u00bb ordPorFrecuencia \u00ab20012016\u00bb == \u00ab61122000\u00bb Soluciones import Data.List (group, sort) ordPorFrecuencia :: Ord&#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":[4],"tags":[8,58,13,28,11,16,14],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.glc.us.es\/~jalonso\/exercitium\/wp-json\/wp\/v2\/posts\/2068"}],"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=2068"}],"version-history":[{"count":6,"href":"https:\/\/www.glc.us.es\/~jalonso\/exercitium\/wp-json\/wp\/v2\/posts\/2068\/revisions"}],"predecessor-version":[{"id":6354,"href":"https:\/\/www.glc.us.es\/~jalonso\/exercitium\/wp-json\/wp\/v2\/posts\/2068\/revisions\/6354"}],"wp:attachment":[{"href":"https:\/\/www.glc.us.es\/~jalonso\/exercitium\/wp-json\/wp\/v2\/media?parent=2068"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.glc.us.es\/~jalonso\/exercitium\/wp-json\/wp\/v2\/categories?post=2068"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.glc.us.es\/~jalonso\/exercitium\/wp-json\/wp\/v2\/tags?post=2068"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}