{"id":6758,"date":"2022-03-11T10:18:51","date_gmt":"2022-03-11T04:48:51","guid":{"rendered":"https:\/\/golangbyexamples.com\/?p=6758"},"modified":"2022-03-11T10:22:17","modified_gmt":"2022-03-11T04:52:17","slug":"multiply-two-strings-golang","status":"publish","type":"post","link":"https:\/\/golangbyexamples.com\/multiply-two-strings-golang\/","title":{"rendered":"Program to multiply two strings 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-2\"><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/golangbyexamples.com\/multiply-two-strings-golang\/#Overview\" title=\"Overview\">Overview<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-2\"><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/golangbyexamples.com\/multiply-two-strings-golang\/#Program\" title=\"Program\">Program<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"has-luminous-vivid-orange-color has-text-color has-large-font-size 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\">Write a program to multiply two strings. <\/p>\n\n\n\n<p class=\"has-medium-font-size\">Examples<\/p>\n\n\n\n<pre class=\"wp-block-prismatic-blocks\"><code class=\"language-go\">Input: \"12\"*\"12\"\nOutput: 144\n\nInput: \"123\"*\"12\"\nOutput: 1476<\/code><\/pre>\n\n\n\n<h2 class=\"has-luminous-vivid-orange-color has-text-color has-large-font-size wp-block-heading\"><span class=\"ez-toc-section\" id=\"Program\"><\/span><strong>Program<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"has-medium-font-size\">Here 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\"math\"\n\t\"strconv\"\n)\n\nfunc multiply(num1 string, num2 string) string {\n\n\tif len(num1) > len(num2) {\n\t\tnum2, num1 = num1, num2\n\t}\n\n\toutput := 0\n\n\tk := 0\n\n\tcarry := 0\n\n\tfor i := len(num1) - 1; i >= 0; i-- {\n\n\t\tx := 0\n\t\ttemp := 0\n\t\tfor j := len(num2) - 1; j >= 0; j-- {\n\n\t\t\tdigit1, _ := strconv.Atoi(string(num1[i]))\n\t\t\tdigit2, _ := strconv.Atoi(string(num2[j]))\n\n\t\t\tmultiply_output := digit1*digit2 + carry\n\n\t\t\tcarry = multiply_output \/ 10\n\n\t\t\ttemp = multiply_output%10*int(math.Pow(10, float64(x))) + temp\n\t\t\tx = x + 1\n\t\t}\n\n\t\ttemp = carry*int(math.Pow(10, float64(x))) + temp\n\t\tcarry = 0\n\n\t\toutput = temp*int(math.Pow(10, float64(k))) + output\n\t\tk = k + 1\n\t}\n\n\treturn strconv.Itoa(output)\n}\n\nfunc main() {\n\toutput := multiply(\"12\", \"12\")\n\tfmt.Println(output)\n\n\toutput = multiply(\"123\", \"12\")\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\">144\n1476<\/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 &#8211; <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 &#8211;<a href=\"https:\/\/golangbyexamples.com\/all-design-patterns-golang\/\">All Design Patterns Golang<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Table of Contents OverviewProgram Overview Write a program to multiply two strings. Examples Program Here is the program for the same. Output Note: Check out our Golang Advanced Tutorial. The tutorials in&#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-6758","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 to multiply two strings 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\/multiply-two-strings-golang\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Program to multiply two strings in Go (Golang) - Welcome To Golang By Example\" \/>\n<meta property=\"og:description\" content=\"Table of Contents OverviewProgram Overview Write a program to multiply two strings. 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