{"id":7572,"date":"2022-12-14T06:00:25","date_gmt":"2022-12-14T04:00:25","guid":{"rendered":"http:\/\/www.glc.us.es\/~jalonso\/exercitium\/?p=7572"},"modified":"2023-04-20T17:29:28","modified_gmt":"2023-04-20T15:29:28","slug":"14-dic-22","status":"publish","type":"post","link":"https:\/\/www.glc.us.es\/~jalonso\/exercitium\/14-dic-22\/","title":{"rendered":"El tipo de las expresiones aritm\u00e9ticas: N\u00famero de operaciones en una expresi\u00f3n"},"content":{"rendered":"<p>Usando el <a href=\"https:\/\/bit.ly\/40vCQUh\">tipo de las expresiones aritm\u00e9ticas<\/a>, definir la funci\u00f3n<\/p>\n<pre lang=\"text\">\n   numeroOps :: Expr -> Int\n<\/pre>\n<p>tal que <code>numeroOps e<\/code> es el n\u00famero de operaciones de <code>e<\/code>. Por ejemplo,<\/p>\n<pre lang=\"text\">\n   numeroOps (Lit 3)                      ==  0\n   numeroOps (Suma (Lit 7) (Op (Lit 5)))  ==  2\n<\/pre>\n<p><b>Soluciones<\/b><\/p>\n<p>A continuaci\u00f3n se muestran las <a href=\"#haskell\">soluciones en Haskell<\/a> y las <a href=\"#python\">soluciones en Python<\/a>.<\/p>\n<p><a name=\"haskell\"><\/a><br \/>\n<b>Soluciones en Haskell<\/b><\/p>\n<pre lang=\"haskell\">\nimport Tipo_expresion_aritmetica (Expr (..))\n\nnumeroOps :: Expr -> Int\nnumeroOps (Lit _)        = 0\nnumeroOps (Suma x y)     = 1 + numeroOps x + numeroOps y\nnumeroOps (Op x)         = 1 + numeroOps x\nnumeroOps (SiCero x y z) = 1 + numeroOps x + numeroOps y + numeroOps z\n<\/pre>\n<p><a name=\"python\"><\/a><br \/>\n<b>Soluciones en Python<\/b><\/p>\n<pre lang=\"python\">\nfrom src.tipo_expresion_aritmetica import Expr, Lit, Op, SiCero, Suma\n\n\ndef numeroOps(e: Expr) -> int:\n    match e:\n        case Lit(_):\n            return 0\n        case Suma(x, y):\n            return 1 + numeroOps(x) + numeroOps(y)\n        case Op(x):\n            return 1 + numeroOps(x)\n        case SiCero(x, y, z):\n            return 1 + numeroOps(x) + numeroOps(y) + numeroOps(z)\n    assert False\n<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>Usando el tipo de las expresiones aritm\u00e9ticas, definir la funci\u00f3n numeroOps :: Expr -> Int tal que numeroOps e es el n\u00famero de operaciones de e. Por ejemplo, numeroOps (Lit 3) == 0 numeroOps (Suma (Lit 7) (Op (Lit 5))) == 2 Soluciones A continuaci\u00f3n se muestran las soluciones en Haskell y las soluciones en&#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":[581],"tags":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.glc.us.es\/~jalonso\/exercitium\/wp-json\/wp\/v2\/posts\/7572"}],"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=7572"}],"version-history":[{"count":20,"href":"https:\/\/www.glc.us.es\/~jalonso\/exercitium\/wp-json\/wp\/v2\/posts\/7572\/revisions"}],"predecessor-version":[{"id":8081,"href":"https:\/\/www.glc.us.es\/~jalonso\/exercitium\/wp-json\/wp\/v2\/posts\/7572\/revisions\/8081"}],"wp:attachment":[{"href":"https:\/\/www.glc.us.es\/~jalonso\/exercitium\/wp-json\/wp\/v2\/media?parent=7572"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.glc.us.es\/~jalonso\/exercitium\/wp-json\/wp\/v2\/categories?post=7572"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.glc.us.es\/~jalonso\/exercitium\/wp-json\/wp\/v2\/tags?post=7572"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}