{"id":13993,"date":"2021-10-01T10:00:58","date_gmt":"2021-10-01T04:30:58","guid":{"rendered":"https:\/\/python-programs.com\/?p=13993"},"modified":"2021-11-22T18:33:29","modified_gmt":"2021-11-22T13:03:29","slug":"python-program-to-check-whether-string-contains-unique-characters","status":"publish","type":"post","link":"https:\/\/python-programs.com\/python-program-to-check-whether-string-contains-unique-characters\/","title":{"rendered":"Python Program to Check whether String Contains Unique Characters"},"content":{"rendered":"<p>Given a string, the task is to check whether the given string contains all the unique characters in Python.<\/p>\n<p><strong>Examples:<\/strong><\/p>\n<p><strong>Example1:<\/strong><\/p>\n<p><strong>Input:<\/strong><\/p>\n<pre>Given string =btech<\/pre>\n<p><strong>Output:<\/strong><\/p>\n<pre id=\"codeOutputPre\">The given string [ btech ] contains unique characters<\/pre>\n<p><strong>Example2:<\/strong><\/p>\n<p><strong>Input:<\/strong><\/p>\n<pre>Given string =bteceeh<\/pre>\n<p><strong>Output:<\/strong><\/p>\n<pre id=\"codeOutputPre\">The given string [ bteceeh ] contains duplicate characters<\/pre>\n<h2>Program to Check whether String Contains Unique Characters in Python<\/h2>\n<p>Below are the ways to check whether the given string contains unique characters in python.<\/p>\n<ul>\n<li><a href=\"#Using_Counter()_(Hashing_,_Static_Input)\">Using Counter() (Hashing , Static Input)<\/a><\/li>\n<li><a href=\"#Using_Counter()_(Hashing_,_User_Input)\">Using Counter() (Hashing , User Input)<\/a><\/li>\n<li><a href=\"#Using_set()_method_(Static_Input)\">Using set() method (Static Input)<\/a><\/li>\n<li><a href=\"#Using_set()_method_(User_Input)\">Using set() method (User Input)<\/a><\/li>\n<\/ul>\n<p>Explore complete java concepts from the <a href=\"https:\/\/python-programs.com\/python-programming-examples-with-output\/\">Java programming examples<\/a> and get ready to become a good programmer and crack the java software developer interview with ease.<\/p>\n<h3 id=\"Using_Counter()_(Hashing_,_Static_Input)\">Method #1: Using Counter() (Hashing , Static Input)<\/h3>\n<p><strong>Approach:<\/strong><\/p>\n<ul>\n<li>Import the Counter() function from collections using the import keyword.<\/li>\n<li>Give the string as static input and store it in a variable.<\/li>\n<li>Calculate the frequency of all the given string elements using the Counter() function which returns the element and its frequency as key-value pair and store this dictionary in a variable(say <strong>strngfreqelements<\/strong>)<\/li>\n<li>Calculate the length of this frequency dictionary using the len() function and store it in a variable.<\/li>\n<li>Calculate the length of the given string using the len() function and store it in another variable.<\/li>\n<li>Check if both lengths are equal or not using the If conditional statement.<\/li>\n<li>If both lengths are equal then the given string contains all the unique characters.<\/li>\n<li>Else the given string contains duplicate characters.<\/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\"># Import the Counter() function from collections using the import keyword.\r\nfrom collections import Counter\r\n# Give the string as static input and store it in a variable.\r\ngivenstrng = 'btech'\r\n# Calculate the frequency of all the given string elements\r\n# using the Counter() function which returns the element\r\n# and its frequency as key-value pair and\r\n# store this dictionary in a variable(say strngfreqelements)\r\nstrngfreqelements = Counter(givenstrng)\r\n# Calculate the length of this frequency dictionary\r\n# using the len() function and store it in a variable.\r\nlengthfreq = len(strngfreqelements)\r\n# Calculate the length of the given string using\r\n# the len() function and store it in another variable.\r\nlengthstrng = len(givenstrng)\r\n# Check if both lengths are equal or not using the If conditional statement.\r\n# If both lengths are equal then the given string contains all the unique characters.\r\nif(lengthfreq == lengthstrng):\r\n    print('The given string [', givenstrng, '] contains unique characters')\r\n# Else the given string contains duplicate characters.\r\nelse:\r\n    print('The given string [', givenstrng, '] contains duplicate characters')\r\n<\/pre>\n<p><strong>Output:<\/strong><\/p>\n<pre id=\"codeOutputPre\">The given string [ btech ] contains unique characters<\/pre>\n<h3 id=\"Using_Counter()_(Hashing_,_User_Input)\">Method #2: Using Counter() (Hashing , User Input)<\/h3>\n<p><strong>Approach:<\/strong><\/p>\n<ul>\n<li>Import the Counter() function from collections using the import keyword.<\/li>\n<li>Give the string as user input using the input() function and store it in a variable.<\/li>\n<li>Calculate the frequency of all the given string elements using the Counter() function which returns the element and its frequency as key-value pair and store this dictionary in a variable(say <strong>strngfreqelements<\/strong>)<\/li>\n<li>Calculate the length of this frequency dictionary using the len() function and store it in a variable.<\/li>\n<li>Calculate the length of the given string using the len() function and store it in another variable.<\/li>\n<li>Check if both lengths are equal or not using the If conditional statement.<\/li>\n<li>If both lengths are equal then the given string contains all the unique characters.<\/li>\n<li>Else the given string contains duplicate characters.<\/li>\n<li>The Exit of the program.<\/li>\n<\/ul>\n<p><strong>Below is the implementation:<br \/>\n<\/strong><\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"python\"># Import the Counter() function from collections using the import keyword.\r\nfrom collections import Counter\r\n# Give the string as user input using the input() function and store it in a variable.\r\ngivenstrng = input('Enter some random string = ')\r\n# Calculate the frequency of all the given string elements\r\n# using the Counter() function which returns the element\r\n# and its frequency as key-value pair and\r\n# store this dictionary in a variable(say strngfreqelements)\r\nstrngfreqelements = Counter(givenstrng)\r\n# Calculate the length of this frequency dictionary\r\n# using the len() function and store it in a variable.\r\nlengthfreq = len(strngfreqelements)\r\n# Calculate the length of the given string using\r\n# the len() function and store it in another variable.\r\nlengthstrng = len(givenstrng)\r\n# Check if both lengths are equal or not using the If conditional statement.\r\n# If both lengths are equal then the given string contains all the unique characters.\r\nif(lengthfreq == lengthstrng):\r\n    print('The given string [', givenstrng, '] contains unique characters')\r\n# Else the given string contains duplicate characters.\r\nelse:\r\n    print('The given string [', givenstrng, '] contains duplicate characters')\r\n<\/pre>\n<p><strong>Output:<\/strong><\/p>\n<pre>Enter some random string = oneplus\r\nThe given string [ oneplus ] contains unique characters<\/pre>\n<h3 id=\"Using_set()_method_(Static_Input)\">Method #3: Using set() method (Static Input)<\/h3>\n<p><strong>Approach:<\/strong><\/p>\n<ul>\n<li>Give the string as static input and store it in a variable.<\/li>\n<li>Convert this string to set using set() function and store it in a variable.<\/li>\n<li>Calculate the length of this set using the len() function and store it in a variable.<\/li>\n<li>Calculate the length of the given string using the len() function and store it in another variable.<\/li>\n<li>Check if both lengths are equal or not using the If conditional statement.<\/li>\n<li>If both lengths are equal then the given string contains all the unique characters.<\/li>\n<li>Else the given string contains duplicate characters.<\/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\"># Give the string as static input and store it in a variable.\r\ngivenstrng = 'bteceeh'\r\n# Convert this string to set using set() function and store it in a variable.\r\nstrngset = set(givenstrng)\r\n# Calculate the length of this set using the len() function and store it in a variable.\r\nlengthfreq = len(strngset)\r\n# Calculate the length of the given string using\r\n# the len() function and store it in another variable.\r\nlengthstrng = len(givenstrng)\r\n# Check if both lengths are equal or not using the If conditional statement.\r\n# If both lengths are equal then the given string contains all the unique characters.\r\nif(lengthfreq == lengthstrng):\r\n    print('The given string [', givenstrng, '] contains unique characters')\r\n# Else the given string contains duplicate characters.\r\nelse:\r\n    print('The given string [', givenstrng, '] contains duplicate characters')\r\n<\/pre>\n<p><strong>Output:<\/strong><\/p>\n<pre id=\"codeOutputPre\">The given string [ bteceeh ] contains duplicate characters<\/pre>\n<h3 id=\"Using_set()_method_(User_Input)\">Method #4: Using set() method (User Input)<\/h3>\n<p><strong>Approach:<\/strong><\/p>\n<ul>\n<li>Give the string as static input and store it in a variable.<\/li>\n<li>Give the string as user input using the input() function and store it in a variable.<\/li>\n<li>Calculate the length of this set using the len() function and store it in a variable.<\/li>\n<li>Calculate the length of the given string using the len() function and store it in another variable.<\/li>\n<li>Check if both lengths are equal or not using the If conditional statement.<\/li>\n<li>If both lengths are equal then the given string contains all the unique characters.<\/li>\n<li>Else the given string contains duplicate characters.<\/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\"># Give the string as user input using the input() function and store it in a variable.\r\ngivenstrng = input('Enter some random string = ')\r\n# Convert this string to set using set() function and store it in a variable.\r\nstrngset = set(givenstrng)\r\n# Calculate the length of this set using the len() function and store it in a variable.\r\nlengthfreq = len(strngset)\r\n# Calculate the length of the given string using\r\n# the len() function and store it in another variable.\r\nlengthstrng = len(givenstrng)\r\n# Check if both lengths are equal or not using the If conditional statement.\r\n# If both lengths are equal then the given string contains all the unique characters.\r\nif(lengthfreq == lengthstrng):\r\n    print('The given string [', givenstrng, '] contains unique characters')\r\n# Else the given string contains duplicate characters.\r\nelse:\r\n    print('The given string [', givenstrng, '] contains duplicate characters')\r\n<\/pre>\n<p><strong>Output:<\/strong><\/p>\n<pre>Enter some random string = xiaomi\r\nThe given string [ xiaomi ] contains duplicate characters<\/pre>\n<p><strong>Related Programs<\/strong>:<\/p>\n<ul>\n<li><a href=\"https:\/\/python-programs.com\/python-program-to-check-whether-a-string-is-a-palindrome-or-not-using-recursion\/\">python program to check whether a string is a palindrome or not using recursion<\/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-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-whether-the-given-number-is-strong-number-or-not\/\">python program to check whether the given number is 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Examples: Example1: Input: Given string =btech Output: The given string [ btech ] contains unique characters Example2: Input: Given string =bteceeh Output: The given string [ bteceeh ] contains duplicate characters Program to Check whether String &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/python-programs.com\/python-program-to-check-whether-string-contains-unique-characters\/\"> <span class=\"screen-reader-text\">Python Program to Check whether String Contains Unique Characters<\/span> Read More &raquo;<\/a><\/p>\n","protected":false},"author":7,"featured_media":14033,"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 whether String Contains Unique Characters - 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-whether-string-contains-unique-characters\/\" \/>\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 whether String Contains Unique Characters - Python Programs\" \/>\n<meta property=\"og:description\" content=\"Given a string, the task is to check whether the given string contains all the unique characters in Python. 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Examples: Example1: Input: Given string =btech Output: The given string [ btech ] contains unique characters Example2: Input: Given string =bteceeh Output: The given string [ bteceeh ] contains duplicate characters Program to Check whether String &hellip; Python Program to Check whether String Contains Unique Characters Read More &raquo;","og_url":"https:\/\/python-programs.com\/python-program-to-check-whether-string-contains-unique-characters\/","og_site_name":"Python Programs","article_publisher":"https:\/\/www.facebook.com\/btechgeeks","article_published_time":"2021-10-01T04:30:58+00:00","article_modified_time":"2021-11-22T13:03:29+00:00","og_image":[{"width":1280,"height":720,"url":"https:\/\/python-programs.com\/wp-content\/uploads\/2021\/07\/Program-to-Check-whether-String-Contains-Unique-Characters.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":"7 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-whether-string-contains-unique-characters\/#primaryimage","url":"https:\/\/python-programs.com\/wp-content\/uploads\/2021\/07\/Program-to-Check-whether-String-Contains-Unique-Characters.png","contentUrl":"https:\/\/python-programs.com\/wp-content\/uploads\/2021\/07\/Program-to-Check-whether-String-Contains-Unique-Characters.png","width":1280,"height":720,"caption":"Program to Check whether String Contains Unique Characters"},{"@type":"WebPage","@id":"https:\/\/python-programs.com\/python-program-to-check-whether-string-contains-unique-characters\/#webpage","url":"https:\/\/python-programs.com\/python-program-to-check-whether-string-contains-unique-characters\/","name":"Python Program to Check whether String Contains Unique Characters - 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