{"id":8206,"date":"2022-07-25T17:10:31","date_gmt":"2022-07-25T11:40:31","guid":{"rendered":"https:\/\/golangbyexamples.com\/?p=8206"},"modified":"2022-07-25T17:18:50","modified_gmt":"2022-07-25T11:48:50","slug":"program-pascal-triangle-golang","status":"publish","type":"post","link":"https:\/\/golangbyexamples.com\/program-pascal-triangle-golang\/","title":{"rendered":"Program for Pascal&#8217;s Triangle in Go (Golang)"},"content":{"rendered":"\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_17 counter-hierarchy counter-decimal ez-toc-light-blue\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" style=\"display: none;\"><i class=\"ez-toc-glyphicon ez-toc-icon-toggle\"><\/i><\/a><\/span><\/div>\n<nav><ul class=\"ez-toc-list ez-toc-list-level-1\"><ul class=\"ez-toc-list-level-2\"><li class=\"ez-toc-heading-level-2\"><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/golangbyexamples.com\/program-pascal-triangle-golang\/#Overview\" title=\"Overview\">Overview<\/a><\/li><\/ul><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-1\"><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/golangbyexamples.com\/program-pascal-triangle-golang\/#Program\" title=\"Program\">Program<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Overview\"><\/span><strong>Overview<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"has-medium-font-size\">The objective is to find the print n number of rows of Pascal&#8217;s triangle. The number n is given as an input to the program<\/p>\n\n\n\n<p class=\"has-medium-font-size\"><strong>Example 1<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-prismatic-blocks\"><code class=\"language-go\">Input: numRows = 4\nOutput: [[1],[1,1],[1,2,1],[1,3,3,1]]<\/code><\/pre>\n\n\n\n<p class=\"has-medium-font-size\"><strong>Example 2<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-prismatic-blocks\"><code class=\"language-go\">Input: numRows = 5\nOutput: [[1],[1,1],[1,2,1],[1,3,3,1],[1,4,6,4,1]]<\/code><\/pre>\n\n\n\n<p class=\"has-medium-font-size\">Refer to this link to know more about Pascal&#8217;s Triangle here &#8211; <a href=\"https:\/\/en.wikipedia.org\/wiki\/Pascal%27s_triangle\">https:\/\/en.wikipedia.org\/wiki\/Pascal%27s_triangle<\/a><\/p>\n\n\n\n<p class=\"has-medium-font-size\">The idea is to use dynamic programming here.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Program\"><\/span><strong>Program<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h1>\n\n\n\n<p class=\"has-medium-font-size\">Below is the program for the same<\/p>\n\n\n\n<pre class=\"wp-block-prismatic-blocks\"><code class=\"language-go\">package main\n\nimport \"fmt\"\n\nfunc generate(numRows int) [][]int {\n\tfirstRow := []int{1}\n\n\tif numRows == 1 {\n\t\treturn [][]int{firstRow}\n\t}\n\n\tsecondRow := []int{1, 1}\n\n\tif numRows == 2 {\n\t\treturn [][]int{firstRow, secondRow}\n\t}\n\n\toutput := [][]int{firstRow, secondRow}\n\n\tfor i := 2; i < numRows; i++ {\n\t\ttemp := make([]int, i+1)\n\n\t\tlastRow := output[i-1]\n\n\t\ttemp[0] = 1\n\t\ttemp[i] = 1\n\n\t\tfor j := 1; j < i; j++ {\n\t\t\ttemp[j] = lastRow[j-1] + lastRow[j]\n\t\t}\n\n\t\toutput = append(output, temp)\n\n\t}\n\n\treturn output\n\n}\n\nfunc main() {\n\toutput := generate(4)\n\tfmt.Println(output)\n\n\toutput = generate(5)\n\tfmt.Println(output)\n}<\/code><\/pre>\n\n\n\n<p class=\"has-medium-font-size\"><strong>Output:<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-prismatic-blocks\"><code class=\"language-go\">[1] [1 1] [1 2 1] [1 3 3 1]]\n[[1] [1 1] [1 2 1] [1 3 3 1] [1 4 6 4 1]]<\/code><\/pre>\n\n\n\n<p class=\"has-medium-font-size\"><strong>Note: <\/strong>Check out our Golang Advanced Tutorial. The tutorials in this series are elaborative and we have tried to cover all concepts with examples. This tutorial is for those who are looking to gain expertise and a solid understanding of golang - <a href=\"https:\/\/golangbyexamples.com\/golang-comprehensive-tutorial\/\">Golang Advance Tutorial<\/a><\/p>\n\n\n\n<p class=\"has-medium-font-size\">Also if you are interested in understanding how all design patterns can be implemented in Golang. If yes, then this post is for you - <a href=\"https:\/\/golangbyexamples.com\/all-design-patterns-golang\/\">All Design Patterns Golang<\/a><\/p>\n\n\n\n<p class=\"has-medium-font-size\">Also, check out our system design tutorial series here - <a href=\"https:\/\/techbyexample.com\/system-design-questions\/\">System Design Tutorial Series<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Table of Contents OverviewProgram Overview The objective is to find the print n number of rows of Pascal&#8217;s triangle. The number n is given as an input to the program Example 1&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":"","footnotes":"","jetpack_publicize_message":"","jetpack_is_tweetstorm":false},"categories":[1],"tags":[3,4],"class_list":["post-8206","post","type-post","status-publish","format-standard","hentry","category-tech","tag-go","tag-golang"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Program for Pascal&#039;s Triangle in Go (Golang) - Welcome To Golang By Example<\/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:\/\/golangbyexamples.com\/program-pascal-triangle-golang\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Program for Pascal&#039;s Triangle in Go (Golang) - Welcome To Golang By Example\" \/>\n<meta property=\"og:description\" content=\"Table of Contents OverviewProgram Overview The objective is to find the print n number of rows of Pascal&#8217;s triangle. 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