{"id":2868,"date":"2021-06-07T14:48:35","date_gmt":"2021-06-07T09:18:35","guid":{"rendered":"https:\/\/www.codingbroz.com\/?p=2868"},"modified":"2021-06-22T20:00:27","modified_gmt":"2021-06-22T14:30:27","slug":"java-iterator-solution","status":"publish","type":"post","link":"https:\/\/www.codingbroz.com\/java-iterator-solution\/","title":{"rendered":"Java Iterator | HackerRank Solution"},"content":{"rendered":"\n<p>Hello coders, today we are going to solve <strong>Java Iterator HackerRank Solution<\/strong>.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1167\" height=\"675\" src=\"https:\/\/www.codingbroz.com\/wp-content\/uploads\/2021\/06\/java-iterator.png\" alt=\"Java Iterator\" class=\"wp-image-2869\" srcset=\"https:\/\/www.codingbroz.com\/wp-content\/uploads\/2021\/06\/java-iterator.png 1167w, https:\/\/www.codingbroz.com\/wp-content\/uploads\/2021\/06\/java-iterator-768x444.png 768w\" sizes=\"(max-width: 1167px) 100vw, 1167px\" \/><\/figure>\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-662bfa4506fa5\" 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-662bfa4506fa5\" 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\/java-iterator-solution\/#Problem\" title=\"Problem\">Problem<\/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\/java-iterator-solution\/#Solution_%E2%80%93_Java_Iterator\" title=\"Solution &#8211; Java Iterator\">Solution &#8211; Java Iterator<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Problem\"><\/span><strong>Problem<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Java Iterator class can help you to iterate through every element in a collection. Here is a simple example:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>import java.util.*;\npublic class Example{\n\n    public static void main(String &#91;]args){\n        ArrayList mylist = new ArrayList();\n        mylist.add(\"Hello\");\n        mylist.add(\"Java\");\n        mylist.add(\"4\");\n        Iterator it = mylist.iterator();\n        while(it.hasNext()){\n            Object element = it.next();\n            System.out.println((String)element);\n        }\n    }\n}<\/code><\/pre>\n\n\n\n<p>In this problem you need to complete a method func. The method takes an ArrayList as input. In that ArrayList there is one or more integer numbers, then there is a special string &#8220;###&#8221;, after that there are one or more other strings. A sample ArrayList may look like this:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>element&#91;0]=&gt;42\nelement&#91;1]=&gt;10\nelement&#91;2]=&gt;\"###\"\nelement&#91;3]=&gt;\"Hello\"\nelement&#91;4]=&gt;\"Java\"<\/code><\/pre>\n\n\n\n<p>You have to modify the func method by editing at most 2 lines so that the code only prints the elements after the special string &#8220;###&#8221;. For the sample above the output will be:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Hello\nJava<\/code><\/pre>\n\n\n\n<p>Note: The stdin doesn&#8217;t contain the string &#8220;###&#8221;, it is added in the main method.<\/p>\n\n\n\n<p>To restore the original code in the editor, click the top left icon on the editor and create a new buffer.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Solution_%E2%80%93_Java_Iterator\"><\/span><strong>Solution &#8211; Java Iterator<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"java\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">import java.util.*;\npublic class Main{\n   \n   static Iterator func(ArrayList mylist){\n      Iterator it=mylist.iterator();\n      while(it.hasNext()){\n         import java.util.*;\npublic class Main{\n\t\n   static Iterator func(ArrayList mylist){\n      Iterator it=mylist.iterator();\n      while(it.hasNext()){\n         Object element = it.next();\n         if(element instanceof String)\/\/Hints: use instanceof operator\n\n\t\t\tbreak;\n\t\t}\n      return it;\n      \n   }\n   @SuppressWarnings({ \"unchecked\" })\n   public static void main(String []args){\n      ArrayList mylist = new ArrayList();\n      Scanner sc = new Scanner(System.in);\n      int n = sc.nextInt();\n      int m = sc.nextInt();\n      for(int i = 0;i&lt;n;i++){\n         mylist.add(sc.nextInt());\n      }\n      \n      mylist.add(\"###\");\n      for(int i=0;i&lt;m;i++){\n         mylist.add(sc.next());\n      }\n      \n      Iterator it=func(mylist);\n      while(it.hasNext()){\n         Object element = it.next();\n         System.out.println((String)element);\n      }\n   }\n}\n\n            break;\n      }\n      return it;\n      \n   }\n   @SuppressWarnings({ \"unchecked\" })\n   public static void main(String []args){\n      ArrayList mylist = new ArrayList();\n      Scanner sc = new Scanner(System.in);\n      int n = sc.nextInt();\n      int m = sc.nextInt();\n      for(int i = 0;i&lt;n;i++){\n         mylist.add(sc.nextInt());\n      }\n      \n      mylist.add(\"###\");\n      for(int i=0;i&lt;m;i++){\n         mylist.add(sc.next());\n      }\n      \n      Iterator it=func(mylist);\n      while(it.hasNext()){\n         Object element = it.next();\n         System.out.println((String)element);\n      }\n   }\n}<\/pre>\n\n\n\n<script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script>\n<ins class=\"adsbygoogle\"\n     style=\"display:block; text-align:center;\"\n     data-ad-layout=\"in-article\"\n     data-ad-format=\"fluid\"\n     data-ad-client=\"ca-pub-5246141430412355\"\n     data-ad-slot=\"8798433565\"><\/ins>\n<script>\n     (adsbygoogle = window.adsbygoogle || []).push({});\n<\/script>\n\n\n\n<p><strong>Disclaimer:<\/strong> The above Problem ( <strong><em><a href=\"https:\/\/www.hackerrank.com\/challenges\/java-iterator\/problem\" target=\"_blank\" data-type=\"URL\" data-id=\"https:\/\/www.hackerrank.com\/challenges\/java-iterator\/problem\" rel=\"noreferrer noopener\">Java Iterator<\/a><\/em><\/strong> ) is generated by <strong>Hacker Rank <\/strong>but the Solution is Provided by <strong>CodingBroz<\/strong>. This tutorial is only for <strong>Educational <\/strong>and <strong>Learning<\/strong> Purpose.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Hello coders, today we are going to solve Java Iterator HackerRank Solution.<\/p>\n","protected":false},"author":1,"featured_media":2869,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","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":"default","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":[9,120],"tags":[80,84,18,121],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"https:\/\/www.codingbroz.com\/wp-content\/uploads\/2021\/06\/java-iterator.png","jetpack-related-posts":[],"_links":{"self":[{"href":"https:\/\/www.codingbroz.com\/wp-json\/wp\/v2\/posts\/2868"}],"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\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.codingbroz.com\/wp-json\/wp\/v2\/comments?post=2868"}],"version-history":[{"count":2,"href":"https:\/\/www.codingbroz.com\/wp-json\/wp\/v2\/posts\/2868\/revisions"}],"predecessor-version":[{"id":3758,"href":"https:\/\/www.codingbroz.com\/wp-json\/wp\/v2\/posts\/2868\/revisions\/3758"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.codingbroz.com\/wp-json\/wp\/v2\/media\/2869"}],"wp:attachment":[{"href":"https:\/\/www.codingbroz.com\/wp-json\/wp\/v2\/media?parent=2868"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.codingbroz.com\/wp-json\/wp\/v2\/categories?post=2868"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.codingbroz.com\/wp-json\/wp\/v2\/tags?post=2868"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}