{"id":6514,"date":"2022-06-22T23:00:00","date_gmt":"2022-06-22T17:30:00","guid":{"rendered":"https:\/\/www.codingbroz.com\/?p=6514"},"modified":"2022-06-19T11:20:42","modified_gmt":"2022-06-19T05:50:42","slug":"ruby-enumerables-any-all-none-and-find-solution","status":"publish","type":"post","link":"https:\/\/www.codingbroz.com\/ruby-enumerables-any-all-none-and-find-solution\/","title":{"rendered":"Ruby Enumerables: &#8216;any&#8217;, &#8216;all&#8217;, &#8216;none&#8217;, and &#8216;find&#8217; Solution"},"content":{"rendered":"\n<p>In this post, we will solve <strong>Ruby Enumerables: &#8216;any&#8217;, &#8216;all&#8217;, &#8216;none&#8217;, and &#8216;find&#8217; HackerRank Solution<\/strong>. This Problem <strong>(Ruby Enumerables: &#8216;any&#8217;, &#8216;all&#8217;, &#8216;none&#8217;, and &#8216;find&#8217;)<\/strong> is a part of <strong>HackerRank Ruby<\/strong> series.<\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_65 ez-toc-wrap-left counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<label for=\"ez-toc-cssicon-toggle-item-663675b731f89\" class=\"ez-toc-cssicon-toggle-label\"><label class=\"ez-toc-title\">Table of Contents<\/label>\n<span class=\"ez-toc-cssicon\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #0090ff;color:#0090ff\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #0090ff;color:#0090ff\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-663675b731f89\" checked \/><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.codingbroz.com\/ruby-enumerables-any-all-none-and-find-solution\/#Objective\" title=\"Objective\">Objective<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.codingbroz.com\/ruby-enumerables-any-all-none-and-find-solution\/#Task\" title=\"Task\">Task<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.codingbroz.com\/ruby-enumerables-any-all-none-and-find-solution\/#Solution_%E2%80%93_Ruby_Enumerables_%E2%80%98any_%E2%80%98all_%E2%80%98none_and_%E2%80%98find\" title=\"Solution &#8211; Ruby Enumerables: &#8216;any&#8217;, &#8216;all&#8217;, &#8216;none&#8217;, and &#8216;find&#8217;\">Solution &#8211; Ruby Enumerables: &#8216;any&#8217;, &#8216;all&#8217;, &#8216;none&#8217;, and &#8216;find&#8217;<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Objective\"><\/span><strong>Objective<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Ruby offers various&nbsp;<a href=\"http:\/\/ruby-doc.org\/core-2.2.3\/Enumerable.html\" target=\"_blank\" rel=\"noopener\">enumerables<\/a>&nbsp;on collections that check for validity of the objects within it.<\/p>\n\n\n\n<p>Consider the following example:<\/p>\n\n\n\n<pre class=\"wp-block-code has-ast-global-color-5-color has-ast-global-color-8-background-color has-text-color has-background\"><code>> arr = &#91;1, 2, 3, 4, 5, 6]\r\n=> &#91;1, 2, 3, 4, 5, 6]\r\n> h = {\"a\" => 1, \"b\" => 2, \"c\" => 3}\r\n=> {\"a\" => 1, \"b\" => 2, \"c\" => 3}<\/code><\/pre>\n\n\n\n<p>The\u00a0<a href=\"http:\/\/ruby-doc.org\/core-2.2.3\/Enumerable.html#method-i-any-3F\" target=\"_blank\" rel=\"noopener\">any?<\/a>\u00a0method returns\u00a0<code>true<\/code>\u00a0if the block\u00a0<em>ever<\/em>\u00a0returns a value other than\u00a0<code>false<\/code>\u00a0or\u00a0<code>nil<\/code>\u00a0for any element passed to it:<\/p>\n\n\n\n<pre class=\"wp-block-code has-ast-global-color-5-color has-ast-global-color-8-background-color has-text-color has-background\"><code>> arr.any? {|a| a % 2 == 0} # checks if any number in the array is even\r\n=> True\r\n> h.any? {|key, value| value.is_a? String} # checks if any value of the Hash object is of the type String\r\n=> False<\/code><\/pre>\n\n\n\n<p>The\u00a0<a href=\"http:\/\/ruby-doc.org\/core-2.2.3\/Enumerable.html#method-i-all-3F\" target=\"_blank\" rel=\"noopener\">all?<\/a>\u00a0method returns\u00a0<code>true<\/code>\u00a0if the block\u00a0<em>never<\/em>\u00a0returns\u00a0<code>false<\/code>\u00a0or\u00a0<code>nil<\/code>\u00a0for any element passed to it:<\/p>\n\n\n\n<pre class=\"wp-block-code has-ast-global-color-5-color has-ast-global-color-8-background-color has-text-color has-background\"><code>> arr.all? {|a| a.is_a? Integer} # checks if all elements of the array are of the type Integer\r\n=> True\r\n> h.all? {|key, value| key.is_a? String} # checks if all keys of the Hash object are of the type String\r\n=> True<\/code><\/pre>\n\n\n\n<p>The\u00a0<a href=\"http:\/\/ruby-doc.org\/core-2.2.3\/Enumerable.html#method-i-none-3F\" target=\"_blank\" rel=\"noopener\">none?<\/a>\u00a0method returns\u00a0<code>true<\/code>\u00a0if the block\u00a0<em>never<\/em>\u00a0returns\u00a0<code>true<\/code>\u00a0for any element passed to it:<\/p>\n\n\n\n<pre class=\"wp-block-code has-ast-global-color-5-color has-ast-global-color-8-background-color has-text-color has-background\"><code>> arr.none? {|a| a.nil?} # Checks if none of the elements in the array are of nil type\r\n=> True\r\n> h.none? {|key, value| value &lt; 3} # checks if all values of the Hash object are less than 3\r\n=> False<\/code><\/pre>\n\n\n\n<p>The\u00a0<a href=\"http:\/\/ruby-doc.org\/core-2.2.3\/Enumerable.html#method-i-find\" target=\"_blank\" rel=\"noopener\">find<\/a>\u00a0method returns the first element for which block is\u00a0<em>not<\/em>\u00a0<code>false<\/code>:<\/p>\n\n\n\n<pre class=\"wp-block-code has-ast-global-color-5-color has-ast-global-color-8-background-color has-text-color has-background\"><code>> arr.find {|a| a > 5} # returns the first element greater than 5 and `nil` if none satisfies the condition\r\n=> 6\r\n> h.find {|key, value| key == \"b\"} # returns an Array of the first match &#91;key, value] that satisfies the condition and nil otherwise\r\n=> &#91;\"b\", 2]\r<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Task\"><\/span><strong>Task<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Based on what you&#8217;ve learned above, complete the functions declared in your editor below.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Solution_%E2%80%93_Ruby_Enumerables_%E2%80%98any_%E2%80%98all_%E2%80%98none_and_%E2%80%98find\"><\/span><strong>Solution &#8211; Ruby Enumerables: &#8216;any&#8217;, &#8216;all&#8217;, &#8216;none&#8217;, and &#8216;find&#8217;<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"ruby\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">def func_any(hash)\n  # Check and return true if any key object within the hash is of the type Integer\n  # If not found, return false.\n  hash.any? {|key,value| key.is_a? Integer}\nend\n\ndef func_all(hash)\n  # Check and return true if all the values within the hash are Integers and are &lt; 10\n  # If not all values satisfy this, return false.\n  hash.all? {|key, value| (value.is_a? Integer and value &lt; 10)}\nend\n\ndef func_none(hash)\n  # Check and return true if none of the values within the hash are nil\n  # If any value contains nil, return false.\n  hash.none? {|key, value| value.nil? }\nend\n\ndef func_find(hash)\n  # Check and return the first object that satisfies either of the following properties:\n  #   1. There is a [key, value] pair where the key and value are both Integers and the value is &lt; 20 \n  #   2. There is a [key, value] pair where the key and value are both Strings and the value starts with `a`.\n  hash.find {|key, value| ((key.is_a? Integer and value.is_a? Integer and value &lt; 20) or (key.is_a? String and value.is_a? String and value[0] == 'a'))}\nend\n<\/pre>\n\n\n\n<p><strong>Note:<\/strong> This problem <strong>(<a href=\"https:\/\/www.hackerrank.com\/challenges\/ruby-enumerable-any-all-none-find\/problem\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Ruby Enumerables: &#8216;any&#8217;, &#8216;all&#8217;, &#8216;none&#8217;, and &#8216;find&#8217;<\/a>)<\/strong> is generated by <strong><a href=\"https:\/\/www.hackerrank.com\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">HackerRank<\/a><\/strong> but the solution is provided by <strong><a href=\"https:\/\/www.codingbroz.com\/\">CodingBroz<\/a><\/strong>. This tutorial is only for <strong>Educational<\/strong> and <strong>Learning<\/strong> purpose.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In this post, we will solve Ruby Enumerables: &#8216;any&#8217;, &#8216;all&#8217;, &#8216;none&#8217;, and &#8216;find&#8217; HackerRank Solution. This Problem (Ruby Enumerables: &#8216;any&#8217;, &#8216;all&#8217;, &#8216;none&#8217;, and &#8216;find&#8217;) is a part of HackerRank Ruby series.<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[9,680],"tags":[681],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","jetpack-related-posts":[],"_links":{"self":[{"href":"https:\/\/www.codingbroz.com\/wp-json\/wp\/v2\/posts\/6514"}],"collection":[{"href":"https:\/\/www.codingbroz.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.codingbroz.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.codingbroz.com\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.codingbroz.com\/wp-json\/wp\/v2\/comments?post=6514"}],"version-history":[{"count":3,"href":"https:\/\/www.codingbroz.com\/wp-json\/wp\/v2\/posts\/6514\/revisions"}],"predecessor-version":[{"id":6517,"href":"https:\/\/www.codingbroz.com\/wp-json\/wp\/v2\/posts\/6514\/revisions\/6517"}],"wp:attachment":[{"href":"https:\/\/www.codingbroz.com\/wp-json\/wp\/v2\/media?parent=6514"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.codingbroz.com\/wp-json\/wp\/v2\/categories?post=6514"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.codingbroz.com\/wp-json\/wp\/v2\/tags?post=6514"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}