{"id":34294,"date":"2024-11-01T09:26:29","date_gmt":"2024-11-01T09:26:29","guid":{"rendered":"http:\/\/atmokpo.com\/w\/?p=34294"},"modified":"2024-11-01T10:57:49","modified_gmt":"2024-11-01T10:57:49","slug":"c-coding-test-course-making-an-integer-equal-to-1","status":"publish","type":"post","link":"https:\/\/atmokpo.com\/w\/34294\/","title":{"rendered":"C++ Coding Test Course, Making an Integer Equal to 1"},"content":{"rendered":"<p><body><\/p>\n<p>Hello, everyone. In this lecture, we will discuss the algorithm problem &#8220;Making an Integer Equal to 1,&#8221; which can be implemented in C++. This problem is one of the types frequently encountered in coding tests for job preparation and requires various ways of thinking. Therefore, while solving this problem, you can enhance your basic algorithm design and trimming skills, as well as improve your C++ programming abilities.<\/p>\n<h2>Problem Description<\/h2>\n<p>Given an integer x, we want to make this integer equal to 1 using the following two operations:<\/p>\n<ul>\n<li>If x is even, divide x by 2.<\/li>\n<li>If x is odd, subtract 1 from x.<\/li>\n<\/ul>\n<p>Only one operation can be performed at a time, and the goal is to find the minimum number of times to make x equal to 1 by repeating the above operations. The range of x is from 1 to 10<sup>6<\/sup>.<\/p>\n<h3>Input<\/h3>\n<pre><code>\nx = 10\n<\/code><\/pre>\n<h3>Output<\/h3>\n<pre><code>\nresult = 5\n<\/code><\/pre>\n<h2>Approach to the Problem<\/h2>\n<p>To solve this problem, we need to calculate the minimum number of operations while transforming x to 1, either through a recursive approach or a loop. The following steps can be considered to implement the algorithm.<\/p>\n<h3>1. Basic Algorithm Design<\/h3>\n<p>Initially, determine whether x is odd or even and apply the appropriate operation based on that condition. Continue this process and increment the count until x becomes 1. While recursion can be used, a for loop might be simpler.<\/p>\n<h3>2. Time Complexity Analysis<\/h3>\n<p>The time complexity of this algorithm depends on the value of x. Since x can be up to 10^6, the operations will be performed fewer than 20 times at most. This is a very efficient method.<\/p>\n<h2>C++ Code Implementation<\/h2>\n<p>Now let&#8217;s implement the above algorithm in C++. The code below calculates the minimum number of operations required to make the given integer equal to 1.<\/p>\n<pre><code>#include <iostream>\nusing namespace std;\n\nint makeOne(int x) {\n    int count = 0; \/\/ Variable to count the number of operations\n    while (x > 1) { \/\/ Continue looping while x is greater than 1\n        if (x % 2 == 0) { \/\/ If x is even\n            x \/= 2; \/\/ Divide x by 2\n        } else { \/\/ If x is odd\n            x -= 1; \/\/ Subtract 1 from x\n        }\n        count++; \/\/ Increase operation count\n    }\n    return count; \/\/ Return the final operation count\n}\n\nint main() {\n    int x;\n    cout << \"Enter an integer: \";\n    cin >> x; \/\/ Get an integer input from the user\n    int result = makeOne(x); \/\/ Call the makeOne function\n    cout << \"Minimum number of operations to make the integer equal to 1: \" << result << endl; \/\/ Output the result\n    return 0;\n}\n<\/code><\/pre>\n<h3>Code Explanation<\/h3>\n<p>The code above defines a function <code>makeOne<\/code> that takes the given integer x as an argument and calculates the minimum number of operations needed to make that integer equal to 1. Using a while loop, the operations are continuously performed while x is greater than 1, and the operation count is recorded at each iteration. As a result, it ultimately returns the total number of operations required to make x equal to 1.<\/p>\n<h2>Testing and Validation<\/h2>\n<p>Now, let's verify if the code works correctly with several test cases.<\/p>\n<pre><code>\nEnter an integer: 10\nMinimum number of operations to make the integer equal to 1: 5\n\nEnter an integer: 15\nMinimum number of operations to make the integer equal to 1: 8\n\nEnter an integer: 1\nMinimum number of operations to make the integer equal to 1: 0\n<\/code><\/pre>\n<h2>Conclusion<\/h2>\n<p>In this lecture, we have solved the algorithm problem \"Making an Integer Equal to 1.\" Through this problem, we covered the basics of C++ syntax, algorithm design, and code implementation methods. It is essential to constantly think about various situations encountered during the process of solving algorithm problems and the ways to overcome them. I encourage you to solve various problems to enhance your problem-solving skills. I will return with beneficial content in the next lecture. Thank you!<\/p>\n<p><\/body><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Hello, everyone. In this lecture, we will discuss the algorithm problem &#8220;Making an Integer Equal to 1,&#8221; which can be implemented in C++. This problem is one of the types frequently encountered in coding tests for job preparation and requires various ways of thinking. Therefore, while solving this problem, you can enhance your basic algorithm &hellip; <a href=\"https:\/\/atmokpo.com\/w\/34294\/\" class=\"more-link\">\ub354 \ubcf4\uae30<span class=\"screen-reader-text\"> &#8220;C++ Coding Test Course, Making an Integer Equal to 1&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[111],"tags":[],"class_list":["post-34294","post","type-post","status-publish","format-standard","hentry","category-c-coding-test-tutorials-2"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>C++ Coding Test Course, Making an Integer Equal to 1 - \ub77c\uc774\ube0c\uc2a4\ub9c8\ud2b8<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/atmokpo.com\/w\/34294\/\" \/>\n<meta property=\"og:locale\" content=\"ko_KR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"C++ Coding Test Course, Making an Integer Equal to 1 - \ub77c\uc774\ube0c\uc2a4\ub9c8\ud2b8\" \/>\n<meta property=\"og:description\" content=\"Hello, everyone. In this lecture, we will discuss the algorithm problem &#8220;Making an Integer Equal to 1,&#8221; which can be implemented in C++. This problem is one of the types frequently encountered in coding tests for job preparation and requires various ways of thinking. Therefore, while solving this problem, you can enhance your basic algorithm &hellip; \ub354 \ubcf4\uae30 &quot;C++ Coding Test Course, Making an Integer Equal to 1&quot;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/atmokpo.com\/w\/34294\/\" \/>\n<meta property=\"og:site_name\" content=\"\ub77c\uc774\ube0c\uc2a4\ub9c8\ud2b8\" \/>\n<meta property=\"article:published_time\" content=\"2024-11-01T09:26:29+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-11-01T10:57:49+00:00\" \/>\n<meta name=\"author\" content=\"root\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@bebubo4\" \/>\n<meta name=\"twitter:site\" content=\"@bebubo4\" \/>\n<meta name=\"twitter:label1\" content=\"\uae00\uc4f4\uc774\" \/>\n\t<meta name=\"twitter:data1\" content=\"root\" \/>\n\t<meta name=\"twitter:label2\" content=\"\uc608\uc0c1 \ub418\ub294 \ud310\ub3c5 \uc2dc\uac04\" \/>\n\t<meta name=\"twitter:data2\" content=\"2\ubd84\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/atmokpo.com\/w\/34294\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/atmokpo.com\/w\/34294\/\"},\"author\":{\"name\":\"root\",\"@id\":\"https:\/\/atmokpo.com\/w\/#\/schema\/person\/91b6b3b138fbba0efb4ae64b1abd81d7\"},\"headline\":\"C++ Coding Test Course, Making an Integer Equal to 1\",\"datePublished\":\"2024-11-01T09:26:29+00:00\",\"dateModified\":\"2024-11-01T10:57:49+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/atmokpo.com\/w\/34294\/\"},\"wordCount\":458,\"publisher\":{\"@id\":\"https:\/\/atmokpo.com\/w\/#organization\"},\"articleSection\":[\"C++ Coding Test Tutorials\"],\"inLanguage\":\"ko-KR\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/atmokpo.com\/w\/34294\/\",\"url\":\"https:\/\/atmokpo.com\/w\/34294\/\",\"name\":\"C++ Coding Test Course, Making an Integer Equal to 1 - \ub77c\uc774\ube0c\uc2a4\ub9c8\ud2b8\",\"isPartOf\":{\"@id\":\"https:\/\/atmokpo.com\/w\/#website\"},\"datePublished\":\"2024-11-01T09:26:29+00:00\",\"dateModified\":\"2024-11-01T10:57:49+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/atmokpo.com\/w\/34294\/#breadcrumb\"},\"inLanguage\":\"ko-KR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/atmokpo.com\/w\/34294\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/atmokpo.com\/w\/34294\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"\ud648\",\"item\":\"https:\/\/atmokpo.com\/w\/en\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"C++ Coding Test Course, Making an Integer Equal to 1\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/atmokpo.com\/w\/#website\",\"url\":\"https:\/\/atmokpo.com\/w\/\",\"name\":\"\ub77c\uc774\ube0c\uc2a4\ub9c8\ud2b8\",\"description\":\"\",\"publisher\":{\"@id\":\"https:\/\/atmokpo.com\/w\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/atmokpo.com\/w\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"ko-KR\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/atmokpo.com\/w\/#organization\",\"name\":\"\ub77c\uc774\ube0c\uc2a4\ub9c8\ud2b8\",\"url\":\"https:\/\/atmokpo.com\/w\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"ko-KR\",\"@id\":\"https:\/\/atmokpo.com\/w\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/atmokpo.com\/w\/wp-content\/uploads\/2024\/11\/logo.png\",\"contentUrl\":\"https:\/\/atmokpo.com\/w\/wp-content\/uploads\/2024\/11\/logo.png\",\"width\":400,\"height\":400,\"caption\":\"\ub77c\uc774\ube0c\uc2a4\ub9c8\ud2b8\"},\"image\":{\"@id\":\"https:\/\/atmokpo.com\/w\/#\/schema\/logo\/image\/\"},\"sameAs\":[\"https:\/\/x.com\/bebubo4\"]},{\"@type\":\"Person\",\"@id\":\"https:\/\/atmokpo.com\/w\/#\/schema\/person\/91b6b3b138fbba0efb4ae64b1abd81d7\",\"name\":\"root\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"ko-KR\",\"@id\":\"https:\/\/atmokpo.com\/w\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/708197b41fc6435a7ce22d951b25d4a47e9e904270cb1f04682d4f025066f80c?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/708197b41fc6435a7ce22d951b25d4a47e9e904270cb1f04682d4f025066f80c?s=96&d=mm&r=g\",\"caption\":\"root\"},\"sameAs\":[\"http:\/\/atmokpo.com\/w\"],\"url\":\"https:\/\/atmokpo.com\/w\/author\/root\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"C++ Coding Test Course, Making an Integer Equal to 1 - \ub77c\uc774\ube0c\uc2a4\ub9c8\ud2b8","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/atmokpo.com\/w\/34294\/","og_locale":"ko_KR","og_type":"article","og_title":"C++ Coding Test Course, Making an Integer Equal to 1 - \ub77c\uc774\ube0c\uc2a4\ub9c8\ud2b8","og_description":"Hello, everyone. In this lecture, we will discuss the algorithm problem &#8220;Making an Integer Equal to 1,&#8221; which can be implemented in C++. This problem is one of the types frequently encountered in coding tests for job preparation and requires various ways of thinking. Therefore, while solving this problem, you can enhance your basic algorithm &hellip; \ub354 \ubcf4\uae30 \"C++ Coding Test Course, Making an Integer Equal to 1\"","og_url":"https:\/\/atmokpo.com\/w\/34294\/","og_site_name":"\ub77c\uc774\ube0c\uc2a4\ub9c8\ud2b8","article_published_time":"2024-11-01T09:26:29+00:00","article_modified_time":"2024-11-01T10:57:49+00:00","author":"root","twitter_card":"summary_large_image","twitter_creator":"@bebubo4","twitter_site":"@bebubo4","twitter_misc":{"\uae00\uc4f4\uc774":"root","\uc608\uc0c1 \ub418\ub294 \ud310\ub3c5 \uc2dc\uac04":"2\ubd84"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/atmokpo.com\/w\/34294\/#article","isPartOf":{"@id":"https:\/\/atmokpo.com\/w\/34294\/"},"author":{"name":"root","@id":"https:\/\/atmokpo.com\/w\/#\/schema\/person\/91b6b3b138fbba0efb4ae64b1abd81d7"},"headline":"C++ Coding Test Course, Making an Integer Equal to 1","datePublished":"2024-11-01T09:26:29+00:00","dateModified":"2024-11-01T10:57:49+00:00","mainEntityOfPage":{"@id":"https:\/\/atmokpo.com\/w\/34294\/"},"wordCount":458,"publisher":{"@id":"https:\/\/atmokpo.com\/w\/#organization"},"articleSection":["C++ Coding Test Tutorials"],"inLanguage":"ko-KR"},{"@type":"WebPage","@id":"https:\/\/atmokpo.com\/w\/34294\/","url":"https:\/\/atmokpo.com\/w\/34294\/","name":"C++ Coding Test Course, Making an Integer Equal to 1 - \ub77c\uc774\ube0c\uc2a4\ub9c8\ud2b8","isPartOf":{"@id":"https:\/\/atmokpo.com\/w\/#website"},"datePublished":"2024-11-01T09:26:29+00:00","dateModified":"2024-11-01T10:57:49+00:00","breadcrumb":{"@id":"https:\/\/atmokpo.com\/w\/34294\/#breadcrumb"},"inLanguage":"ko-KR","potentialAction":[{"@type":"ReadAction","target":["https:\/\/atmokpo.com\/w\/34294\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/atmokpo.com\/w\/34294\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"\ud648","item":"https:\/\/atmokpo.com\/w\/en\/"},{"@type":"ListItem","position":2,"name":"C++ Coding Test Course, Making an Integer Equal to 1"}]},{"@type":"WebSite","@id":"https:\/\/atmokpo.com\/w\/#website","url":"https:\/\/atmokpo.com\/w\/","name":"\ub77c\uc774\ube0c\uc2a4\ub9c8\ud2b8","description":"","publisher":{"@id":"https:\/\/atmokpo.com\/w\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/atmokpo.com\/w\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"ko-KR"},{"@type":"Organization","@id":"https:\/\/atmokpo.com\/w\/#organization","name":"\ub77c\uc774\ube0c\uc2a4\ub9c8\ud2b8","url":"https:\/\/atmokpo.com\/w\/","logo":{"@type":"ImageObject","inLanguage":"ko-KR","@id":"https:\/\/atmokpo.com\/w\/#\/schema\/logo\/image\/","url":"https:\/\/atmokpo.com\/w\/wp-content\/uploads\/2024\/11\/logo.png","contentUrl":"https:\/\/atmokpo.com\/w\/wp-content\/uploads\/2024\/11\/logo.png","width":400,"height":400,"caption":"\ub77c\uc774\ube0c\uc2a4\ub9c8\ud2b8"},"image":{"@id":"https:\/\/atmokpo.com\/w\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/x.com\/bebubo4"]},{"@type":"Person","@id":"https:\/\/atmokpo.com\/w\/#\/schema\/person\/91b6b3b138fbba0efb4ae64b1abd81d7","name":"root","image":{"@type":"ImageObject","inLanguage":"ko-KR","@id":"https:\/\/atmokpo.com\/w\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/708197b41fc6435a7ce22d951b25d4a47e9e904270cb1f04682d4f025066f80c?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/708197b41fc6435a7ce22d951b25d4a47e9e904270cb1f04682d4f025066f80c?s=96&d=mm&r=g","caption":"root"},"sameAs":["http:\/\/atmokpo.com\/w"],"url":"https:\/\/atmokpo.com\/w\/author\/root\/"}]}},"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack-related-posts":[],"_links":{"self":[{"href":"https:\/\/atmokpo.com\/w\/wp-json\/wp\/v2\/posts\/34294","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/atmokpo.com\/w\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/atmokpo.com\/w\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/atmokpo.com\/w\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/atmokpo.com\/w\/wp-json\/wp\/v2\/comments?post=34294"}],"version-history":[{"count":1,"href":"https:\/\/atmokpo.com\/w\/wp-json\/wp\/v2\/posts\/34294\/revisions"}],"predecessor-version":[{"id":34295,"href":"https:\/\/atmokpo.com\/w\/wp-json\/wp\/v2\/posts\/34294\/revisions\/34295"}],"wp:attachment":[{"href":"https:\/\/atmokpo.com\/w\/wp-json\/wp\/v2\/media?parent=34294"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/atmokpo.com\/w\/wp-json\/wp\/v2\/categories?post=34294"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/atmokpo.com\/w\/wp-json\/wp\/v2\/tags?post=34294"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}