{"id":2774,"date":"2021-06-06T12:22:24","date_gmt":"2021-06-06T06:52:24","guid":{"rendered":"https:\/\/www.codingbroz.com\/?p=2774"},"modified":"2021-06-20T19:40:28","modified_gmt":"2021-06-20T14:10:28","slug":"day-one-quartiles-solution","status":"publish","type":"post","link":"https:\/\/www.codingbroz.com\/day-one-quartiles-solution\/","title":{"rendered":"Day 1: Quartiles | 10 Days Of Statistics | HackerRank Solution"},"content":{"rendered":"\n<p>Hello coders, today we are going to solve <strong>Day 1: Quartiles HackerRank Solution<\/strong> which is a part of <strong>10 Days of Statistics<\/strong> Series.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1200\" height=\"677\" src=\"https:\/\/www.codingbroz.com\/wp-content\/uploads\/2021\/06\/day-one-quartiles-statistics-solution-codingbroz.png\" alt=\"Day 1: Quartiles\" class=\"wp-image-2776\" srcset=\"https:\/\/www.codingbroz.com\/wp-content\/uploads\/2021\/06\/day-one-quartiles-statistics-solution-codingbroz.png 1200w, https:\/\/www.codingbroz.com\/wp-content\/uploads\/2021\/06\/day-one-quartiles-statistics-solution-codingbroz-768x433.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-662d09adf30b0\" 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-662d09adf30b0\" 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-one-quartiles-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-one-quartiles-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-one-quartiles-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-one-quartiles-solution\/#Constraints\" title=\"Constraints\">Constraints<\/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-one-quartiles-solution\/#Explanation\" title=\"Explanation\">Explanation<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.codingbroz.com\/day-one-quartiles-solution\/#Solution_%E2%80%93_Day_1_Quartiles_Solution\" title=\"Solution &#8211; Day 1: Quartiles Solution\">Solution &#8211; Day 1: Quartiles Solution<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.codingbroz.com\/day-one-quartiles-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-8\" href=\"https:\/\/www.codingbroz.com\/day-one-quartiles-solution\/#Python\" title=\"Python\">Python<\/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>In this challenge, we practice calculating&nbsp;<em>quartiles<\/em>.<\/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>Given an array,&nbsp;<em><strong>arr<\/strong><\/em>, of&nbsp;<strong><em>n<\/em><\/strong>&nbsp;integers, calculate the respective first quartile (<strong><em>Q<\/em><sub>1<\/sub><\/strong>), second quartile (<strong><em>Q<\/em><sub>2<\/sub><\/strong>), and third quartile (<strong><em>Q<\/em><sub>3<\/sub><\/strong>). It is guaranteed that&nbsp;<strong><em>Q<\/em><sub>1<\/sub><\/strong>,&nbsp;<strong><em>Q<\/em><sub>2<\/sub><\/strong>, and&nbsp;<strong><em>Q<\/em><sub>3<\/sub><\/strong>&nbsp;are integers.<\/p>\n\n\n\n<p><strong>Example<\/strong><\/p>\n\n\n\n<p><strong><em>arr<\/em> = [9, 5, 7, 1, 3]<\/strong><br>The sorted array is&nbsp;<strong>[1, 3, 5, 7, 9]<\/strong>&nbsp;which has an odd number of elements. The lower half consists of&nbsp;<strong>[1, 3]<\/strong>, and its median is&nbsp;<strong>1+3\/2 = 2<\/strong>. The middle element is&nbsp;<strong>5<\/strong>&nbsp;and represents the second quartile. The upper half is&nbsp;<strong>[5, 7]<\/strong>&nbsp;and its median is&nbsp;<strong>5+7\/2 = 6<\/strong>. Return&nbsp;<strong>[2, 5, 8]<\/strong>.<\/p>\n\n\n\n<p><strong><em>arr<\/em> = [1, 3, 5, 7]<\/strong><br>The array is already sorted. The lower half is&nbsp;<strong>[1, 3]<\/strong>&nbsp;with a median =<strong>&nbsp;1+3\/2 = 2<\/strong>. The median of the entire array is&nbsp;<strong>3+5\/2 = 4<\/strong>, and of the upper half is<strong>&nbsp;5+7\/2 = 6<\/strong>. Return&nbsp;<strong>[2, 4, 6]<\/strong>.<\/p>\n\n\n\n<p><strong>Function Description<\/strong><\/p>\n\n\n\n<p>Complete the&nbsp;<em>quartiles<\/em>&nbsp;function in the editor below.<\/p>\n\n\n\n<p><em>quartiles<\/em>&nbsp;has the following parameters:<\/p>\n\n\n\n<ul><li><em>int arr[n]:<\/em>&nbsp;the values to segregate<\/li><\/ul>\n\n\n\n<p><strong>Returns<\/strong><\/p>\n\n\n\n<ul><li><em>int[3]:<\/em>&nbsp;the medians of the left half of&nbsp;<em><strong>arr<\/strong><\/em>,&nbsp;<em><strong>arr<\/strong><\/em>&nbsp;in total, and the right half of&nbsp;<em><strong>arr<\/strong><\/em>.<\/li><\/ul>\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>The first line contains an integer,&nbsp;<strong><em>n<\/em><\/strong>, the number of elements in&nbsp;<em><strong>arr<\/strong><\/em>.<br>The second line contains&nbsp;<strong><em>n<\/em><\/strong>&nbsp;space-separated integers, each an&nbsp;<em><strong>arr<\/strong><\/em><strong>[<em>i<\/em>]<\/strong>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Constraints\"><\/span><strong>Constraints<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ul><li><strong>5 &lt;= <em>n<\/em> &lt;= 50<\/strong><\/li><li><strong>0 &lt; arr[i] &lt;= 100<\/strong>, where <em><strong>arr<\/strong><\/em><strong>[<em>i<\/em>]<\/strong>&nbsp;is the&nbsp;<em><strong>i<sup>th<\/sup><\/strong><\/em>&nbsp;element of the array.<\/li><\/ul>\n\n\n\n<p><strong>Sample Input<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>STDIN                   Function\n-----                   --------    \n9                       arr&#91;] size n = 9 \n3 7 8 5 12 14 21 13 18  arr = &#91;3, 7, 8, 5, 12, 14, 21, 13,18]<\/code><\/pre>\n\n\n\n<p><strong>Sample Output<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>6\n12\n16<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Explanation\"><\/span><strong>Explanation<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><strong><em>arr<sub>sorted <\/sub><\/em>= [3, 5, 7, 8, 12, 13, 14, 18, 21]<\/strong>. There is an odd number of elements, and the middle element, the median, is&nbsp;<strong>12<\/strong>.<\/p>\n\n\n\n<p>As there are an odd number of data points, we do not include the median (the central value in the ordered list) in either half:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Lower half (L): 3, 5, 7, 8\n\nUpper half (U): 13, 14, 18, 21<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Solution_%E2%80%93_Day_1_Quartiles_Solution\"><\/span><strong>Solution &#8211; Day 1: Quartiles 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=\"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;\n\nint quad(vector&lt;int> a)\n{\n    int q, n=a.size(); \n    \n    if(n%2==0) \n        q = (a[n\/2-1] + a[n\/2])\/2;\n    else \n        q = a[n\/2];\n    \n    return q;\n}\n\nint main() \n{\n    \/* Enter your code here. Read input from STDIN. Print output to STDOUT *\/ \n    \n    int n; cin>>n; vector&lt;int >a(n);\n    \n    for(auto i=0; i&lt;n; i++)\n        cin>>a[i];\n    \n    sort(a.begin(), a.end());\n    \n    int Q1, Q2, Q3;\n    \n    Q2 = quad(a);\n    \n    vector&lt;int> l(a.begin(), a.begin()+n\/2);\n    vector&lt;int> h;\n    \n    if(n%2==0)\n    {\n        h.insert(h.end(), a.begin()+n\/2, a.end());\n    }\n    else\n    {\n        h.insert(h.end(), a.begin()+n\/2+1, a.end());\n    }\n    \n    Q1 = quad(l);\n    \n    Q3 = quad(h);\n    \n    cout&lt;&lt;Q1&lt;&lt;\"\\n\"&lt;&lt;Q2&lt;&lt;\"\\n\"&lt;&lt;Q3&lt;&lt;\"\\n\";\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=\"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=\"\"># Define functions\ndef median(size, values):\n    if size % 2 == 0:\n        median = (values[int(size\/2)-1] + values[int(size\/2)]) \/ 2\n    else:\n        median = values[int(size\/2)]\n    return int(median)\n\nsize = int(input())\nnumbers = sorted(list(map(int, input().split())))\n\nif size % 2 == 0:\n    data_low = numbers[0:int(size\/2)]\n    data_high = numbers[int(size\/2):size]\nelse:\n    data_low = numbers[0:int(size\/2)]\n    data_high = numbers[int(size\/2)+1:size]\n\nprint (median(len(data_low), data_low))\nprint (median(size, numbers))\nprint (median(len(data_high), data_high))<\/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>(<a href=\"https:\/\/www.hackerrank.com\/challenges\/s10-quartiles\/problem\" target=\"_blank\" rel=\"noreferrer noopener\">Day 1: Quartiles<\/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 1: Quartiles HackerRank Solution which is a part of 10 Days of Statistics Series.<\/p>\n","protected":false},"author":1,"featured_media":2776,"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":[9,187],"tags":[189,80,81,108,18],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"https:\/\/www.codingbroz.com\/wp-content\/uploads\/2021\/06\/day-one-quartiles-statistics-solution-codingbroz.png","jetpack-related-posts":[],"_links":{"self":[{"href":"https:\/\/www.codingbroz.com\/wp-json\/wp\/v2\/posts\/2774"}],"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=2774"}],"version-history":[{"count":3,"href":"https:\/\/www.codingbroz.com\/wp-json\/wp\/v2\/posts\/2774\/revisions"}],"predecessor-version":[{"id":3429,"href":"https:\/\/www.codingbroz.com\/wp-json\/wp\/v2\/posts\/2774\/revisions\/3429"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.codingbroz.com\/wp-json\/wp\/v2\/media\/2776"}],"wp:attachment":[{"href":"https:\/\/www.codingbroz.com\/wp-json\/wp\/v2\/media?parent=2774"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.codingbroz.com\/wp-json\/wp\/v2\/categories?post=2774"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.codingbroz.com\/wp-json\/wp\/v2\/tags?post=2774"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}