{"id":1889,"date":"2021-05-27T17:44:25","date_gmt":"2021-05-27T12:14:25","guid":{"rendered":"https:\/\/www.codingbroz.com\/?p=1889"},"modified":"2021-06-20T22:17:26","modified_gmt":"2021-06-20T16:47:26","slug":"day-0-hello-world-solution","status":"publish","type":"post","link":"https:\/\/www.codingbroz.com\/day-0-hello-world-solution\/","title":{"rendered":"Day 0: Hello, World | 30 Days Of Code | HackerRank Solution"},"content":{"rendered":"\n<p>Hello coders, today we are going to solve <strong>Day 0: Hello, World HackerRank Solution<\/strong> which is a part of<strong> 30 Days of Code<\/strong> Series in <strong>C++<\/strong>, <strong>Java<\/strong> and <strong>Python<\/strong>.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/www.codingbroz.com\/wp-content\/uploads\/2021\/05\/day-0-hello-world-30-days-of-code-solution-codingbroz.png\" alt=\"Day 0: Hello, World\" class=\"wp-image-1891\" srcset=\"https:\/\/www.codingbroz.com\/wp-content\/uploads\/2021\/05\/day-0-hello-world-30-days-of-code-solution-codingbroz.png 1200w, https:\/\/www.codingbroz.com\/wp-content\/uploads\/2021\/05\/day-0-hello-world-30-days-of-code-solution-codingbroz-768x432.png 768w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/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-662cc3c74530c\" 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-662cc3c74530c\" 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\/day-0-hello-world-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\/day-0-hello-world-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\/day-0-hello-world-solution\/#Input_Format\" title=\"Input Format\">Input Format<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.codingbroz.com\/day-0-hello-world-solution\/#Output_Format\" title=\"Output Format\">Output Format<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.codingbroz.com\/day-0-hello-world-solution\/#Solution_%E2%80%93_Day_0_Hello_World_Solution\" title=\"Solution &#8211; Day 0: Hello, World Solution\">Solution &#8211; Day 0: Hello, World Solution<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.codingbroz.com\/day-0-hello-world-solution\/#C\" title=\"C\">C<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.codingbroz.com\/day-0-hello-world-solution\/#C-2\" title=\"C++\">C++<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.codingbroz.com\/day-0-hello-world-solution\/#Java\" title=\"Java\">Java<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.codingbroz.com\/day-0-hello-world-solution\/#Python\" title=\"Python\">Python<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.codingbroz.com\/day-0-hello-world-solution\/#JavaScript\" title=\"JavaScript\">JavaScript<\/a><\/li><\/ul><\/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 class=\"has-black-color has-text-color\">In this challenge, we review some basic concepts that will get you started with this series. You will need to use the same (or similar) syntax to read input and write output in challenges throughout HackerRank. Check out the&nbsp;<a href=\"https:\/\/www.hackerrank.com\/challenges\/30-hello-world\/tutorial\" target=\"_blank\" rel=\"noopener\">Tutorial<\/a>&nbsp;tab for learning materials and an instructional video!<\/p>\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>To complete this challenge, you must save a line of input from stdin to a variable, print&nbsp;<code>Hello, World.<\/code>&nbsp;on a single line, and finally print the value of your variable on a second line.<\/p>\n\n\n\n<p>You&#8217;ve got this!<\/p>\n\n\n\n<p><strong>Note:<\/strong>&nbsp;The instructions are Java-based, but we support submissions in many popular languages. You can switch languages using the drop-down menu above your editor, and the&nbsp;<strong><em>inputString<\/em><\/strong>&nbsp;variable may be written differently depending on the best-practice conventions of your submission language.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Input_Format\"><\/span><strong>Input Format<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>A single line of text denoting&nbsp;<strong><em>inputString <\/em><\/strong>(the variable whose contents must be printed).<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Output_Format\"><\/span><strong>Output Format<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Print&nbsp;<code>Hello, World.<\/code>&nbsp;on the first line, and the contents of&nbsp;<strong><em>inputString<\/em><\/strong>&nbsp;on the second line.<\/p>\n\n\n\n<p><strong>Sample Input<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Welcome to 30 Days of Code!<\/code><\/pre>\n\n\n\n<p><strong>Sample Output<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Hello, World. \nWelcome to 30 Days of Code!<\/code><\/pre>\n\n\n\n<p><strong>Explanation<\/strong><\/p>\n\n\n\n<p>On the first line, we print the string literal&nbsp;<code>Hello, World.<\/code>. On the second line, we print the contents of the&nbsp;<strong><em>inputString<\/em><\/strong>&nbsp;variable which, for this sample case, happens to be&nbsp;<code>Welcome to 30 Days of Code!<\/code>.&nbsp;<em>If you do not print the variable&#8217;s contents to stdout, you will not pass the hidden test case.<\/em><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Solution_%E2%80%93_Day_0_Hello_World_Solution\"><\/span><strong>Solution &#8211; Day 0: Hello, World Solution<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"C\"><\/span><strong>C<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"c\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">#include &lt;stdio.h>\n#include &lt;string.h>\n#include &lt;math.h>\n#include &lt;stdlib.h>\n\nint main() \n{\n    \/* Declare a variable named 'input_string' to hold our input.*\/\n    char input_string[105]; \n    \n    \/* Read a full line of input from stdin and save it to our variable, input_string.*\/\n    scanf(\"%[^\\n]\", input_string); \n    \n    \/* Print a string literal saying \"Hello, World.\" to stdout using printf.*\/\n    printf(\"Hello, World.\\n\");\n    \n    \/* TO DO: Write a line of code here that prints the contents of input_string to stdout.*\/\n    \n    \/* Solution starts from here *\/\n    \n    printf(\"%s\",input_string);\n    \n    \/* Solution ends here *\/\n    return 0;\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"C-2\"><\/span><strong>C++<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"cpp\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">#include &lt;cmath>\n#include &lt;cstdio>\n#include &lt;vector>\n#include &lt;iostream>\n#include &lt;algorithm>\nusing namespace std;\nint main() {\n    \/\/ Declare a variable named 'input_string' to hold our input.\n    string input_string; \n\n    \/\/ Read a full line of input from stdin (cin) and save it to our variable, input_string.\n    getline(cin, input_string); \n\n    \/\/ Print a string literal saying \"Hello, World.\" to stdout using cout.\n    cout &lt;&lt; \"Hello, World.\" &lt;&lt; endl;\n\n    \/\/ TODO: Write a line of code here that prints the contents of input_string to stdout.\n    cout &lt;&lt; input_string;\n\n    return 0;\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<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Java\"><\/span><strong>Java<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\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.io.*;\nimport java.util.*;\nimport java.text.*;\nimport java.math.*;\nimport java.util.regex.*;\nimport java.util.Scanner;\n\npublic class HelloWorld {\n    public static void main(String[] args) \n    {\n        \/* Create a Scanner object to read input from stdin.*\/\n        Scanner scan = new Scanner(System.in);\n\n        \/* Read a full line of input from stdin and save it to our variable, inputString.*\/\n        String inputString = scan.nextLine();\n\n        \/* Close the scanner object because we've finished reading all of the input from stdin needed for this challenge.*\/\n        scan.close();\n\n        \/* Print a string literal saying \"Hello, World.\" to stdout.*\/\n        System.out.println(\"Hello, World.\");\n\n        \/* Print the contents of inputString to stdout.*\/\n        \n        \/* Solution starts from here *\/\n        System.out.println(inputString);\n        \/* Solution ends here *\/\n    }\n}\n\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Python\"><\/span><strong>Python<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"python\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\"># Read a full line of input from stdin and save it to our dynamically typed variable, input_string.\ninput_string = input()\n\n# Print a string literal saying \"Hello, World.\" to stdout.\nprint('Hello, World.')\n# TODO: Write a line of code here that prints the contents of input_string to stdout.\nprint(input_string)<\/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<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"JavaScript\"><\/span><strong>JavaScript<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"js\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">function processData(inputString) {\n    \/\/ This line of code prints the first line of output\n    console.log(\"Hello, World.\");\n    \/\/ Write the second line of output that prints the contents of 'inputString' here.\n    console.log(inputString);\n}\n\nprocess.stdin.resume();\nprocess.stdin.setEncoding(\"ascii\");\n_input = \"\";\nprocess.stdin.on(\"data\", function (input) {\n    _input += input;\n});\n\nprocess.stdin.on(\"end\", function () {\n   processData(_input);\n});<\/pre>\n\n\n\n<p><strong>Disclaimer:<\/strong> The above Problem <strong>(<a href=\"https:\/\/www.hackerrank.com\/challenges\/30-hello-world\/problem\" target=\"_blank\" rel=\"noreferrer noopener\" class=\"rank-math-link\">Day 0: Hello, World<\/a>)<\/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 Day 0: Hello, World HackerRank Solution which is a part of 30 Days of Code Series in C++, Java and Python.<\/p>\n","protected":false},"author":1,"featured_media":1891,"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":[9,160],"tags":[171,80,18],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"https:\/\/www.codingbroz.com\/wp-content\/uploads\/2021\/05\/day-0-hello-world-30-days-of-code-solution-codingbroz.png","jetpack-related-posts":[],"_links":{"self":[{"href":"https:\/\/www.codingbroz.com\/wp-json\/wp\/v2\/posts\/1889"}],"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=1889"}],"version-history":[{"count":3,"href":"https:\/\/www.codingbroz.com\/wp-json\/wp\/v2\/posts\/1889\/revisions"}],"predecessor-version":[{"id":3513,"href":"https:\/\/www.codingbroz.com\/wp-json\/wp\/v2\/posts\/1889\/revisions\/3513"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.codingbroz.com\/wp-json\/wp\/v2\/media\/1891"}],"wp:attachment":[{"href":"https:\/\/www.codingbroz.com\/wp-json\/wp\/v2\/media?parent=1889"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.codingbroz.com\/wp-json\/wp\/v2\/categories?post=1889"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.codingbroz.com\/wp-json\/wp\/v2\/tags?post=1889"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}