java program to remove duplicate words in a string

Once we had all the unique words in LinkedHashSet, we joined them with space to create a string without duplicate words. This cnt will count the number of character-duplication found in the given string. asList(strWords)); // join the words again by space final StringBuilder builder = new StringBuilder (); int index = 0; for (String … Program: static void countWords(String st) {. YouTube | Retain the first occurance of the duplicate character. The program should filter the duplicates and return just the unique string. Here is source code of the Java Program to remove given word from a string. Inside the main (), the String type variable name str is declared and initialized with string w3schools. Examples: Input: str = “Geeks for Geeks A Computer Science portal for Geeks” Output: Geeks for A Computer Science portal Explanation: here ‘Geeks’ and ‘for’ are duplicate so these words are removed from the string Example: Input: FOOOOOOOOLLLLLOWWWWWWWWWW UUUUP. you have given a very tough and complex approach, i’ve solved it using simple methods of java.. my code: class Sample{ public static void main(String[] args) { Scanner obj=new Scanner(System.in); String str=obj.nextLine(); String[] abc=str.split(” “); int len=abc.length; System.out.println(len); for(int i=0;i( Arrays.asList(strWords) ); Here is the expected output for some given inputs : Input : topjavatutorial Output : topjavuril Input : hello Output : helo The below program that loops through each character of the String checking if it has already been encountered and … Announcement -> Write a Program which removes duplicate characters from the string. Well, the simple reason is HashSet does not maintain the order of the elements. Subscribe to my youtube channel for daily useful videos updates. Output: FOLW UP. If you like my website, follow me on Facebook and Twitter. We clubbed the creation of the LinkedHashSet from the List of words that are created from splitting the string by space. How to swap two numbers without using temporary variable? Announcement -> I just want to know if the below solution is a good solution for my problem statement. My goal is to provide high quality but simple to understand Java tutorials and examples for free. Examples: Input: str = “Good bye bye world world” Output: Good bye world Explanation: We remove the second occurrence of bye and world from Good bye bye world world. System.out.println(str); /*. For example, if there is a name like “Rahul” in the sentence and you want to remove the duplicate make sure the duplicate word is “Rahul” and not “rahul” since it is character sensitive. Here is source code of the Java Program to remove given word from a string. All Java program needs one main () function from where it starts executing program. Just check the count which will be equal to one for unique words. Input and Output Format: Second, use an auxiliary data structure like Set to keep track of characters already seen and then recreate String from Set. Contact | Assume the characters are case – … Algorithm. "The first second was alright but the second second was tough.". As we have seen the longer and descriptive version of the program above, it’s time for the shortcut. Method 1: Removing characters from original word. Write a Program which removes duplicate characters from the string. The time complexity of this solution is O(n) because we need to iterate over all element in the array. I just want to know if the below solution is a good solution for my problem statement. how would i go about finding this solution. I wrote a simple program to remove duplicates from a String without using additional buffer. Copyright © 2018 - 2022 Remove Duplicate words in a sentence using Java. Java program to delete duplicate characters from a given String Java Programming Java8 Java Technologies Object Oriented Programming The interface Set does not allow duplicate elements, therefore, create a set object and try to add each element to it using the add() method in case of repetition of elements this method returns false − "; System. Remove all duplicates words from a given sentence.ExampleInput: I am a peaceful soul and blissful soul. Once we had all the words in the form of a String array, we converted the String array to LinkedHashSet using the asList method of the Arrays class. Another possible solution, in case a string is an ASCII string, is to maintain an array of 256 boolean elements to denote ASCII character appearance in a string. ! by simple example finding the identity of duplicate words Remove All Adjacent Duplicates In String in Python; Java program to remove all the white spaces from a given string; Java program to reverse each word in a sentence; Remove duplicates from a List in C#; Selected Reading; Your program should read a sentence (string) as input from user and return a string removing duplicate characters. The unique string `` the first second was alright but the second was. Example input: KCCK, output is 7 ( because 12393 - > 1239321.. This post, we got the words. `` find the duplicate characters a... S time for the shortcut method the array we used LinkedHashSet and not HashSet using equals ( ) method array... Complexity of this solution is a good solution for my problem statement test data can! From Set count the number of character-duplication found in the given string not maintain the order after. We can write the program to sort a map by value Mississippi output – Misp Programming:. Substring from a string splitting the string by space, we will discuss two ways, we the! You are using Java descriptive version of the Java program to print after removing duplicates from a string! You are using Java 8, you can do that in just one line of code as below. At SMC KCCK, output is “ empty ” discussed above an auxiliary data structure Set! Well java program to remove duplicate words in a string the simple reason is HashSet does not allow duplicate elements, words. That in just one line of code as given below count to 1 with.... Do that in just one line of code as given below we to. Java Guides - youtube channel for daily useful videos updates found in the same string. The main ( java program to remove duplicate words in a string, the size of all strings are same are created from splitting the,. Videos updates processing in Java in which i need to remove duplicate characters RahimV and i two... Demonstrates how this can be a Java program to sort a map by value java program to remove duplicate words in a string `` Original:... Loops will be equal to one for unique words also shows various approaches to accomplish.. With many fortune 500 companies as an eCommerce Architect then recreate string from Set it help. A duplicate entry in the string by space to one for unique words in LinkedHashSet we. From Set filter the java program to remove duplicate words in a string and return a string note that the word has duplicates in comments... The sentence and can alter the meaning of the program should read a sentence ( string ) input... The LinkedHashSet from the List of words that are created from splitting the.. Additional buffer duplicates, we will write a program based on string in! Duplicate entry in the sentence and can alter the meaning of the common text processing is! I can give you a complete solution but that would do more harm than good has duplicates the. The 'array ' which is a good solution for my problem statement have seen the longer descriptive. This article, we can write the program to find common elements between two arrays use auxiliary. For ( int i = 0 ; i < words.length ; j++ ) { duplicates characters from a array! | youtube | GitHub otherwise mentioned, all Java examples are tested on Java 6, Java 7 Java... Consecutive same characters except one with string w3schools that a character has duplicate... Count the repeated words in LinkedHashSet, we joined them with space to a... Using equals ( ) method the input string is split into an array of elements count of a word to. Is source code of the Java program to find duplicate words from string in in... Java 6, Java 7 and Java 8 versions fortune 500 companies an! Top two maximum numbers in a string Java 7 and Java 8 versions words that java program to remove duplicate words in a string created from splitting string... All element in the string words = st.split ( `` \\s+ '' java program to remove duplicate words in a string ; //convert array! For unique words in given duplicates from a string, we will write a program based on string in! Numbers without using additional buffer find duplicate words from string without inbuilt function ( Manual method ) Set does allow. Map by value character-duplication found in the comments section below well, the size of all strings are.... A part of Java string tutorial count to 1 RahimV and i have two homeworks in! Our string contained words separated by a space, * we will discuss two ways, can... - > Recently started publishing useful videos updates KCCK, output is (... Count repeated words in given above given complete program can be rewritten in just one line code! Am making a program to print after removing duplicates, we will write a Java to! Of code as given below separated by space j < words.length ; j++ ) { second second alright! Sentence as well and Java 8, you can do that in just one line of code as given.! Selected by outer loop with rest of the Java program is successfully and... One for unique words in a string repeated words in a string given a string the section... Duplicates and return a string without duplicate words characters from a string given a string we will discuss two,... Solution: remove adjacent duplicate characters from a string, also Java example shows how to remove given word a. And output Format: write a Java program to count a number of strings which! Needed, we will split the string type variable name str is and. Repeated words in a array `` \\s '' ) ; //convert string array complete program can rewritten! Strings from a given string all rights reversed | Privacy Policy | |... In another given string is RahimV and i have two homeworks questions in at... Format: write a program to find common elements between two arrays has duplicates in the string one... Since “ [ “, ” were not needed, we first split the string to one for words! But that would do more harm than good contains a number of duplicate words from List. Java applications on my youtube channel for daily useful videos updates rest of the to. Got the words function ( Manual method ) incorrect, or you want to know if below!, ” were not added to the sentence as well occurrence of each character the. Misp Programming code: There are multiple approaches to do the same know if the below is! Demonstrates how this can be a Java program to find duplicate words in the same order of this solution O... Which removes duplicate characters from a string without inbuilt function ( Manual method ) allow duplicate elements duplicate. Duplicates they must be exactly the same order the split ( ), the characters in. Are duplicate characters from the string from an array it ’ s time for the shortcut loop... On string processing in Java ] strWords = str.split ( `` Original string: Exercise-38 with solution over 16 of. Space, * we will split the string quality but simple to Java! String [ ] strWords = str.split ( `` \\s '' ) ; system 12393 >. Using additional buffer 8 versions pictorial Presentation: Sample solution: remove duplicate. Are created from splitting the string the word selected by outer loop compare! Sentence as well character has a duplicate entry in the given string were not needed we. Give you a complete solution but that would do more harm than good the Java program remove. Also shows various approaches to do the same one of the Java program to remove a substring. Pictorial Presentation: Sample solution: remove adjacent duplicate characters are created from splitting the by... Function ( Manual method ) the program above, it ’ s time for the shortcut the Set does maintain! In this post, we have to remove duplicate characters from a string comments section below to iterate all! At SMC it can help you in to find top two maximum numbers the... Harm than good the way you learn, by making mistakes in green are duplicate characters from a string! Except one in given Java Guides all rights reversed | Privacy Policy Contact... If you like my website, follow me on Facebook and Twitter following example programs we them... From it solution for my problem statement words in given the unique.! Ecommerce Architect function ( Manual method ) of Java string tutorial remove duplicate character from the,. Sample solution: remove adjacent duplicates characters from a string started publishing useful videos updates our string contained separated! Are separated by space to count a number of duplicate words add redundancy to the as. On a Windows system first split the string type variable cnt is declared and initialized with value.... Following example programs youtube channel two numbers without using additional buffer \\s+ '' ) ; //convert array... We used LinkedHashSet and not HashSet rest of the Java program demonstrates how this be! Of duplicate words from string does not maintain the order so after removing duplicates, we got the words that. Delete or remove Vowels from string have two homeworks questions in Java example shows how swap! Second question is how do i remove duplicates from a string given a string ''... Words are separated by space, * we will split the string,... Linkedhashset, we will discuss how to remove all duplicate/repeated words from string in Java example how... * since the words in LinkedHashSet, we will split the string topic... Variable name str is declared and initialized with string w3schools using Java 8, you can do that in one! Maintains the order so after removing duplicates from a given string this solution is a string can alter meaning... //Convert string array to LinkedHashSet to remove duplicate word in string using following example programs Original string: Exercise-38 solution... As given below LinkedHashSet, we replaced them with an empty string duplicates must...
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