{"id":13249,"date":"2021-09-30T17:00:11","date_gmt":"2021-09-30T11:30:11","guid":{"rendered":"https:\/\/python-programs.com\/?p=13249"},"modified":"2021-11-22T18:33:34","modified_gmt":"2021-11-22T13:03:34","slug":"python-program-to-check-if-a-number-is-a-happy-number","status":"publish","type":"post","link":"https:\/\/python-programs.com\/python-program-to-check-if-a-number-is-a-happy-number\/","title":{"rendered":"Python Program to Check If A Number Is A Happy Number"},"content":{"rendered":"<p>The best and excellent way to learn a java programming language is by practicing <a href=\"https:\/\/python-programs.com\/python-programming-examples-with-output\/\">Simple Java Program Examples<\/a> as it includes basic to advanced levels of concepts.<\/p>\n<p>Given a number, the task is to check whether the given number is a happy number or not.<\/p>\n<p><strong>Happy Number :<\/strong><\/p>\n<p>If the repeating sum of the digits squared equals one, the number is said to be a Happy Number. If we continue this method and get outcome 1, we have a happy number. If the outcome is 4, it enters an infinite loop and is not a happy number. Let&#8217;s look at an example to help you grasp it better.<\/p>\n<p>Given Number = 320<br \/>\nSquare of the digits\u00a0 = 3<sup>2\u00a0<\/sup>+ 2<sup>2<\/sup>\u00a0+ 0<sup>2\u00a0<\/sup>= 13<br \/>\nSquare of the digits\u00a0 = 1<sup>2<\/sup>\u00a0+ 3<sup>2<\/sup>\u00a0= 10<br \/>\nSquare of the digits\u00a0 = 1<sup>2<\/sup>\u00a0+ 0<sup>2<\/sup>\u00a0= 1<\/p>\n<p>Other Examples of happy numbers\u00a0 =7, 28, 100 etc.<\/p>\n<p><strong>Examples:<\/strong><\/p>\n<p><strong>Example1:<\/strong><\/p>\n<p><strong>Input:<\/strong><\/p>\n<pre>Given number =100<\/pre>\n<p><strong>Output:<\/strong><\/p>\n<pre id=\"codeOutputPre\">The given number [ 100 ] is a happy number<\/pre>\n<p><strong>Example2:<\/strong><\/p>\n<p><strong>Input:<\/strong><\/p>\n<pre>Given number = 28<\/pre>\n<p><strong>Output:<\/strong><\/p>\n<pre>The given number [ 28 ] is a happy number<\/pre>\n<h2>Program to Check If A Number Is A Happy Number in Python<\/h2>\n<p>Below are the ways to check whether the given number is a happy number or not.<\/p>\n<ul>\n<li><a href=\"#Using_For_loop(Static_Input)\">Using For loop(Static Input)<\/a><\/li>\n<li><a href=\"#Using_For_loop(User_Input)\">Using For loop(User Input)<\/a><\/li>\n<\/ul>\n<h3 id=\"Using_For_loop(Static_Input)\">Method #1: Using For Loop (Static Input)<\/h3>\n<p><strong>Approach:<\/strong><\/p>\n<ul>\n<li>Give the number as static input and store it in a variable.<\/li>\n<li>Create a function <strong>digitSquareSum()<\/strong>\u00a0that accepts the given number as an argument and returns the sum of squares of digits.<\/li>\n<li>Inside the <strong>digitSquareSum()\u00a0<\/strong>function.<\/li>\n<li>Convert the given argument to string using the <strong>str()<\/strong> function.<\/li>\n<li>Convert the given argument into list of digits using list(),map(),int() functions.<\/li>\n<li>Store it in a variable.<\/li>\n<li>Take a variable sumsquaredigits and initialize its value to 0.<\/li>\n<li>Loop in this digits list using For loop.<\/li>\n<li>Increment the value of sumsquaredigits by the square of the digit(iterator value).<\/li>\n<li>Return the sumsquaredigits value.<\/li>\n<li>Take a variable reslt and initialize its value to the given number.<\/li>\n<li>Loop till the reslt is not equal to 1 or 4 using while loop.<\/li>\n<li>Inside the loop pass the reslt value to <strong>digitSquareSum()\u00a0<\/strong>and store it in the same variable reslt.<\/li>\n<li>After the end of the while loop, Check whether reslt value is 1 or not using the If statement.<\/li>\n<li>If it is true then the given number is a happy number.<\/li>\n<li>Else it is not a happy number.<\/li>\n<li>The Exit of the Program.<\/li>\n<\/ul>\n<p><strong>Below is the implementation:<\/strong><\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"python\"># Create a function digitSquareSum()\u00a0that accepts the given number\r\n# as an argument and returns the sum of squares of digits.\r\n\r\n\r\ndef digitSquareSum(resltnumber):\r\n    # Inside the digitSquareSum()\u00a0function.\r\n    # Convert the given argument to string using the str() function.\r\n    strnumbe = str(resltnumber)\r\n    # Convert the given argument into list of digits using list(),map(),int() functions.\r\n    # Store it in a variable.\r\n    numbrlistdigits = list(map(int, strnumbe))\r\n    # Take a variable sumsquaredigits and initialize its value to 0.\r\n    sumsquaredigits = 0\r\n    # Loop in this digits list using For loop.\r\n    for digitvalu in numbrlistdigits:\r\n        # Increment the value of sumsquaredigits by the square\r\n        # of the digit(iterator value).\r\n        sumsquaredigits = sumsquaredigits+(digitvalu**2)\r\n    # Return the sumsquaredigits value\r\n    return sumsquaredigits\r\n\r\n\r\n# Give the number as static input and store it in a variable.\r\nnumbr = 100\r\n# Take a variable reslt and initialize its value to the given number.\r\nreslt = numbr\r\n# Loop till the reslt is not equal to 1 or 4 using while loop.\r\nwhile(reslt != 1 and reslt != 4):\r\n    # Inside the loop pass the reslt value to digitSquareSum()\r\n    # and store it in the same variable reslt.\r\n    reslt = digitSquareSum(reslt)\r\n# After the end of the while loop,\r\n# Check whether reslt value is 1 or not using the If statement.\r\nif(reslt == 1):\r\n    # If it is true then the given number is a happy number.\r\n    print('The given number [', numbr, '] is a happy number')\r\nelse:\r\n    # Else it is not a happy number.\r\n    print('The given number [', numbr, '] is not a happy number')\r\n<\/pre>\n<p><strong>Output:<\/strong><\/p>\n<pre id=\"codeOutputPre\">The given number [ 100 ] is a happy number<\/pre>\n<h3 id=\"Using_For_loop(User_Input)\">Method #2: Using For Loop (User Input)<\/h3>\n<p><strong>Approach:<\/strong><\/p>\n<ul>\n<li>Give the number as user input using int(input()) and store it in a variable.<\/li>\n<li>Create a function <strong>digitSquareSum()<\/strong>\u00a0that accepts the given number as an argument and returns the sum of squares of digits.<\/li>\n<li>Inside the <strong>digitSquareSum()\u00a0<\/strong>function.<\/li>\n<li>Convert the given argument to string using the <strong>str()<\/strong> function.<\/li>\n<li>Convert the given argument into list of digits using list(),map(),int() functions.<\/li>\n<li>Store it in a variable.<\/li>\n<li>Take a variable sumsquaredigits and initialize its value to 0.<\/li>\n<li>Loop in this digits list using For loop.<\/li>\n<li>Increment the value of sumsquaredigits by the square of the digit(iterator value).<\/li>\n<li>Return the sumsquaredigits value.<\/li>\n<li>Take a variable reslt and initialize its value to the given number.<\/li>\n<li>Loop till the reslt is not equal to 1 or 4 using while loop.<\/li>\n<li>Inside the loop pass the reslt value to <strong>digitSquareSum()\u00a0<\/strong>and store it in the same variable reslt.<\/li>\n<li>After the end of the while loop, Check whether reslt value is 1 or not using the If statement.<\/li>\n<li>If it is true then the given number is a happy number.<\/li>\n<li>Else it is not a happy number.<\/li>\n<li>The Exit of the Program.<\/li>\n<\/ul>\n<p><strong>Below is the implementation:<\/strong><\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"python\"># Create a function digitSquareSum()\u00a0that accepts the given number\r\n# as an argument and returns the sum of squares of digits.\r\n\r\n\r\ndef digitSquareSum(resltnumber):\r\n    # Inside the digitSquareSum()\u00a0function.\r\n    # Convert the given argument to string using the str() function.\r\n    strnumbe = str(resltnumber)\r\n    # Convert the given argument into list of digits using list(),map(),int() functions.\r\n    # Store it in a variable.\r\n    numbrlistdigits = list(map(int, strnumbe))\r\n    # Take a variable sumsquaredigits and initialize its value to 0.\r\n    sumsquaredigits = 0\r\n    # Loop in this digits list using For loop.\r\n    for digitvalu in numbrlistdigits:\r\n        # Increment the value of sumsquaredigits by the square\r\n        # of the digit(iterator value).\r\n        sumsquaredigits = sumsquaredigits+(digitvalu**2)\r\n    # Return the sumsquaredigits value\r\n    return sumsquaredigits\r\n\r\n\r\n# Give the number as user input using int(input()) and store it in a variable.\r\nnumbr = int(input(\r\n    'Enter some random number to check whether the number is happy number or not = '))\r\n# Take a variable reslt and initialize its value to the given number.\r\nreslt = numbr\r\n# Loop till the reslt is not equal to 1 or 4 using while loop.\r\nwhile(reslt != 1 and reslt != 4):\r\n    # Inside the loop pass the reslt value to digitSquareSum()\r\n    # and store it in the same variable reslt.\r\n    reslt = digitSquareSum(reslt)\r\n# After the end of the while loop,\r\n# Check whether reslt value is 1 or not using the If statement.\r\nif(reslt == 1):\r\n    # If it is true then the given number is a happy number.\r\n    print('The given number [', numbr, '] is a happy number')\r\nelse:\r\n    # Else it is not a happy number.\r\n    print('The given number [', numbr, '] is not a happy number')\r\n<\/pre>\n<p><strong>Output:<\/strong><\/p>\n<pre id=\"codeOutputPre\">The given number [ 100 ] is a happy number<\/pre>\n<p><strong>Related Programs<\/strong>:<\/p>\n<ul>\n<li><a href=\"https:\/\/python-programs.com\/python-program-to-check-if-a-number-is-peterson-number\/\">python program to check if a number is peterson number<\/a><\/li>\n<li><a href=\"https:\/\/python-programs.com\/python-program-to-check-if-a-string-is-palindrome-or-not\/\">python program to check if a string is palindrome or not<\/a><\/li>\n<li><a href=\"https:\/\/python-programs.com\/python-program-to-check-a-number-is-prime-or-not\/\">python program to check a number is prime or not<\/a><\/li>\n<li><a href=\"https:\/\/python-programs.com\/python-program-to-check-if-a-string-is-a-pangram-or-not\/\">python program to check if a string is a pangram or not<\/a><\/li>\n<li><a href=\"https:\/\/python-programs.com\/python-program-to-check-if-a-date-is-valid-and-print-the-incremented-date\/\">python program to check if a date is valid and print the incremented date<\/a><\/li>\n<li><a href=\"https:\/\/python-programs.com\/python-program-to-find-if-a-number-is-prime-or-not-prime-using-recursion\/\">python program to find if a number is prime or not prime using recursion<\/a><\/li>\n<li><a href=\"https:\/\/python-programs.com\/python-program-to-check-if-a-substring-is-present-in-a-given-string\/\">python program to check if a substring is present in a given string<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>The best and excellent way to learn a java programming language is by practicing Simple Java Program Examples as it includes basic to advanced levels of concepts. Given a number, the task is to check whether the given number is a happy number or not. Happy Number : If the repeating sum of the digits &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/python-programs.com\/python-program-to-check-if-a-number-is-a-happy-number\/\"> <span class=\"screen-reader-text\">Python Program to Check If A Number Is A Happy Number<\/span> Read More &raquo;<\/a><\/p>\n","protected":false},"author":7,"featured_media":13387,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":"","jetpack_publicize_message":"","jetpack_is_tweetstorm":false,"jetpack_publicize_feature_enabled":true},"categories":[5],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v18.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Python Program to Check If A Number Is A Happy Number - Python Programs<\/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:\/\/python-programs.com\/python-program-to-check-if-a-number-is-a-happy-number\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Python Program to Check If A Number Is A Happy Number - Python Programs\" \/>\n<meta property=\"og:description\" content=\"The best and excellent way to learn a java programming language is by practicing Simple Java Program Examples as it includes basic to advanced levels of concepts. 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Given a number, the task is to check whether the given number is a happy number or not. Happy Number : If the repeating sum of the digits &hellip; Python Program to Check If A Number Is A Happy Number Read More &raquo;","og_url":"https:\/\/python-programs.com\/python-program-to-check-if-a-number-is-a-happy-number\/","og_site_name":"Python Programs","article_publisher":"https:\/\/www.facebook.com\/btechgeeks","article_published_time":"2021-09-30T11:30:11+00:00","article_modified_time":"2021-11-22T13:03:34+00:00","og_image":[{"width":1280,"height":720,"url":"https:\/\/python-programs.com\/wp-content\/uploads\/2021\/07\/Program-to-Check-If-A-Number-Is-A-Happy-Number.png","type":"image\/png"}],"twitter_card":"summary_large_image","twitter_creator":"@btech_geeks","twitter_site":"@btech_geeks","twitter_misc":{"Written by":"Vikram Chiluka","Est. reading time":"6 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Organization","@id":"https:\/\/python-programs.com\/#organization","name":"BTech Geeks","url":"https:\/\/python-programs.com\/","sameAs":["https:\/\/www.instagram.com\/btechgeeks\/","https:\/\/www.linkedin.com\/in\/btechgeeks","https:\/\/in.pinterest.com\/btechgeek\/","https:\/\/www.youtube.com\/channel\/UC9MlCqdJ3lKqz2p5114SDIg","https:\/\/www.facebook.com\/btechgeeks","https:\/\/twitter.com\/btech_geeks"],"logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/python-programs.com\/#\/schema\/logo\/image\/","url":"https:\/\/python-programs.com\/wp-content\/uploads\/2020\/11\/BTechGeeks.png","contentUrl":"https:\/\/python-programs.com\/wp-content\/uploads\/2020\/11\/BTechGeeks.png","width":350,"height":70,"caption":"BTech Geeks"},"image":{"@id":"https:\/\/python-programs.com\/#\/schema\/logo\/image\/"}},{"@type":"WebSite","@id":"https:\/\/python-programs.com\/#website","url":"https:\/\/python-programs.com\/","name":"Python Programs","description":"Python Programs with Examples, How To Guides on Python","publisher":{"@id":"https:\/\/python-programs.com\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/python-programs.com\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"en-US"},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/python-programs.com\/python-program-to-check-if-a-number-is-a-happy-number\/#primaryimage","url":"https:\/\/python-programs.com\/wp-content\/uploads\/2021\/07\/Program-to-Check-If-A-Number-Is-A-Happy-Number.png","contentUrl":"https:\/\/python-programs.com\/wp-content\/uploads\/2021\/07\/Program-to-Check-If-A-Number-Is-A-Happy-Number.png","width":1280,"height":720,"caption":"Program to Check If A Number Is A Happy Number"},{"@type":"WebPage","@id":"https:\/\/python-programs.com\/python-program-to-check-if-a-number-is-a-happy-number\/#webpage","url":"https:\/\/python-programs.com\/python-program-to-check-if-a-number-is-a-happy-number\/","name":"Python Program to Check If A Number Is A Happy Number - 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