{"id":985,"date":"2015-01-22T06:00:26","date_gmt":"2015-01-22T04:00:26","guid":{"rendered":"http:\/\/www.glc.us.es\/~jalonso\/exercitium\/?p=985"},"modified":"2015-11-30T19:26:50","modified_gmt":"2015-11-30T17:26:50","slug":"sustitucion-de-listas","status":"publish","type":"post","link":"https:\/\/www.glc.us.es\/~jalonso\/exercitium\/sustitucion-de-listas\/","title":{"rendered":"Sustituci\u00f3n de listas"},"content":{"rendered":"<p>Definir la funci\u00f3n<\/p>\n<pre lang=\"text\">\n   sustituye :: Eq a => [a] -> [a] -> [a] -> [a]\n<\/pre>\n<p>tal que (sustituye xs ys zs) es la lista obtenida sustituyendo las ocurrencias de la lista no vac\u00eda xs en zs por ys. Por ejemplo,<\/p>\n<pre lang=\"text\">\n   sustituye \"as\" \"_\" \"las casaderas\"   ==  \"l_ c_ader_\"\n   sustituye \"as\" \"es\" \"las casaderas\"  ==  \"les cesaderes\"\n   sustituye \"asa\" \"a\" \"las casaderas\"  ==  \"las caderas\"\n   sustituye \"asd\" \"a\" \"las casaderas\"  ==  \"las casaderas\"\n<\/pre>\n<h4>Soluciones<\/h4>\n<pre lang=\"haskell\">\nimport Data.List (isPrefixOf)\n\nsustituye :: Eq a => [a] -> [a] -> [a] -> [a]\nsustituye xs ys [] = []\nsustituye xs ys (z:zs) \n    | isPrefixOf xs (z:zs) = ys ++ sustituye xs ys (drop n zs)\n    | otherwise            = z : sustituye xs ys zs\n    where n = length xs - 1\n<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>Definir la funci\u00f3n sustituye :: Eq a => [a] -> [a] -> [a] -> [a] tal que (sustituye xs ys zs) es la lista obtenida sustituyendo las ocurrencias de la lista no vac\u00eda xs en zs por ys. Por ejemplo, sustituye \u00abas\u00bb \u00ab_\u00bb \u00ablas casaderas\u00bb == \u00abl_ c_ader_\u00bb sustituye \u00abas\u00bb \u00abes\u00bb \u00ablas casaderas\u00bb == \u00ables&#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":[46,170,28,6],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.glc.us.es\/~jalonso\/exercitium\/wp-json\/wp\/v2\/posts\/985"}],"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=985"}],"version-history":[{"count":4,"href":"https:\/\/www.glc.us.es\/~jalonso\/exercitium\/wp-json\/wp\/v2\/posts\/985\/revisions"}],"predecessor-version":[{"id":1799,"href":"https:\/\/www.glc.us.es\/~jalonso\/exercitium\/wp-json\/wp\/v2\/posts\/985\/revisions\/1799"}],"wp:attachment":[{"href":"https:\/\/www.glc.us.es\/~jalonso\/exercitium\/wp-json\/wp\/v2\/media?parent=985"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.glc.us.es\/~jalonso\/exercitium\/wp-json\/wp\/v2\/categories?post=985"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.glc.us.es\/~jalonso\/exercitium\/wp-json\/wp\/v2\/tags?post=985"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}