{"id":9648,"date":"2022-10-13T22:43:49","date_gmt":"2022-10-13T17:13:49","guid":{"rendered":"https:\/\/golangbyexamples.com\/?p=9648"},"modified":"2022-10-13T22:46:14","modified_gmt":"2022-10-13T17:16:14","slug":"sort-slice-asc-desc-golang","status":"publish","type":"post","link":"https:\/\/golangbyexamples.com\/sort-slice-asc-desc-golang\/","title":{"rendered":"Sort a slice of Int in Ascending and Descending order 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\"><li class=\"ez-toc-page-1 ez-toc-heading-level-1\"><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/golangbyexamples.com\/sort-slice-asc-desc-golang\/#Sort_a_slice_in_Ascending_order\" title=\"Sort a slice in Ascending order\">Sort a slice in Ascending order<\/a><\/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\/sort-slice-asc-desc-golang\/#Sort_a_slice_in_Descending_order\" title=\"Sort a slice in Descending order\">Sort a slice in Descending order<\/a><\/li><\/ul><\/nav><\/div>\n<h1 class=\"has-luminous-vivid-orange-color has-text-color has-large-font-size wp-block-heading\"><span class=\"ez-toc-section\" id=\"Sort_a_slice_in_Ascending_order\"><\/span><strong>Sort a slice in Ascending order<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h1>\n\n\n\n<p class=\"has-medium-font-size\"><strong>sort.Ints<\/strong> package of going can be used to sort a full slice or a part of the slice. It is going to sort the string into Ascending order.<\/p>\n\n\n\n<p class=\"has-medium-font-size\">Below is the signature of the method<\/p>\n\n\n\n<p class=\"has-medium-font-size\"><a href=\"https:\/\/pkg.go.dev\/sort#Ints\">https:\/\/pkg.go.dev\/sort#Ints<\/a><\/p>\n\n\n\n<pre class=\"wp-block-prismatic-blocks\"><code class=\"language-go\">func Ints(x []int)<\/code><\/pre>\n\n\n\n<p class=\"has-medium-font-size\">It takes a slice &#8216;x&#8217; as an argument and sorts the slice &#8216;x&#8217; in place.<\/p>\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 (\n\t\"fmt\"\n\t\"sort\"\n)\n\nfunc main() {\n\n\tnums := []int{3, 4, 2, 1}\n\tfmt.Printf(\"Before: %v\", nums)\n\tsort.Ints(nums)\n\tfmt.Printf(\"\\nAfter: %v\", nums)\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\">Before: [3 4 2 1]\nAfter: [1 2 3 4]<\/code><\/pre>\n\n\n\n<h1 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Sort_a_slice_in_Descending_order\"><\/span><strong>Sort a slice in Descending order<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h1>\n\n\n\n<p class=\"has-medium-font-size\">To sort a slice in descending order we will use <strong>Slice<\/strong> method of <strong>sort<\/strong> pacakge<\/p>\n\n\n\n<p class=\"has-medium-font-size\"><a href=\"https:\/\/pkg.go.dev\/sort#Slice\">https:\/\/pkg.go.dev\/sort#Slice<\/a><\/p>\n\n\n\n<p class=\"has-medium-font-size\">Below is the signature of the method<\/p>\n\n\n\n<pre class=\"wp-block-prismatic-blocks\"><code class=\"language-go\">func Slice(x any, less func(i, j int) bool)<\/code><\/pre>\n\n\n\n<p class=\"has-medium-font-size\">So this function takes two arguments<\/p>\n\n\n\n<ul class=\"has-medium-font-size wp-block-list\"><li><strong>x any<\/strong> &#8211; any is nothing here but an empty interface <a href=\"https:\/\/pkg.go.dev\/builtin#any\">https:\/\/pkg.go.dev\/builtin#any<\/a><\/li><\/ul>\n\n\n\n<ul class=\"has-medium-font-size wp-block-list\"><li><strong>less func(i, j int) <\/strong>&#8211; This function is nothing but a comparator function<\/li><\/ul>\n\n\n\n<p class=\"has-medium-font-size\">We can use this comparator function to decide the descending order of the elements in the slice. Below is an example<\/p>\n\n\n\n<pre class=\"wp-block-prismatic-blocks\"><code class=\"language-\">package main\n\nimport (\n\t\"fmt\"\n\t\"sort\"\n)\n\nfunc main() {\n\n\tnums := []int{3, 4, 2, 1}\n\tfmt.Printf(\"Before: %v\", nums)\n\tsort.Slice(nums, func(i, j int) bool {\n\t\treturn nums[i] > nums[j]\n\t})\n\tfmt.Printf(\"\\nAfter: %v\", nums)\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\">Before: [3 4 2 1]\nAfter: [4 3 2 1]<\/code><\/pre>\n\n\n\n<p class=\"has-medium-font-size\">As a matter of fact, you can use <strong>sort.Slice<\/strong> method to also sort a slice in descending order. Below is an example<\/p>\n\n\n\n<pre class=\"wp-block-prismatic-blocks\"><code class=\"language-go\">package main\n\nimport (\n\t\"fmt\"\n\t\"sort\"\n)\n\nfunc main() {\n\n\tnums := []int{3, 4, 2, 1}\n\tfmt.Printf(\"Before: %v\", nums)\n\tsort.Slice(nums, func(i, j int) bool {\n\t\treturn nums[i] < nums[j]\n\t})\n\tfmt.Printf(\"\\nAfter: %v\", nums)\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\">Before: [3 4 2 1]\nAfter: [1 2 3 4]<\/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 -<\/p>\n\n\n\n<p><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\"><strong>Note: <\/strong>Check out our system design tutorial series <a href=\"https:\/\/techbyexample.com\/system-design-questions\/\">System Design Questions<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Table of Contents Sort a slice in Ascending orderSort a slice in Descending order Sort a slice in Ascending order sort.Ints package of going can be used to sort a full slice&#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],"class_list":["post-9648","post","type-post","status-publish","format-standard","hentry","category-tech","tag-go"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.7 - 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