Split a line at a time and store in an array. But its complexity is n^2. I've rolled back Rev 5 4. Copyright Tutorials Point (India) Private Limited. STEP 1: START STEP 2: DEFINE String string = "Big black bug bit a big black dog on his big black nose" STEP 3: DEFINE count STEP 4: CONVERT string into lower-case. Im also trying to figure out how to find two duplicated words separated by a comma (i.e. It only takes a minute to sign up. All Rights Reserved. it is like creating max heap. The best answers are voted up and rise to the top, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site. Currently I am jumping each character and checking, which doesn't seem very efficient. By clicking Post Your Answer, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct. I suggest you have a more dedicated method that uses the words as input, and returns a frequency map mentioned in the 1st advice. To learn more, see our tips on writing great answers. 1 Write a java program to find the most repeated word in a string and also print its frequency. I have literally zero clue what the string of characters means but it works. Since Use wildcards doesnt work with the paragraph symbol ^p, I had to first find/replace all the paragraph symbols with a character that wasnt in the list. Just remove the one found, up its count, and re-insert. The British equivalent of "X objects in a trenchcoat". Thanks, it most likely words but as I said I have to use only for loops, if statements and some inbuild methods (indexOf, compare, isEqual and etc.). It can help you in to find the most frequent words in a string also check the count which will be equal to one for unique words. By using our site, you It would help to break down the problem. Write a program to input a sentence and a word. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. , where N represents the size of the given vector. Two types of files can be handled in python, normal text files, and binary files (written in binary language,0s and 1s). Here we are operating on the .txt file in Python. Most repeated in a row? I will be sharing both of them. Browse other questions tagged, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site. This solution will group all words with similar count. (Proper handling of null == oldWord obviates the contains()). If count is greater than 1, it implies that a word has duplicate in the string. By using our site, you Entry interface will be used as the Map interface maps unique keys to values. Sci fi story where a woman demonstrating a knife with a safety feature cuts herself when the safety is turned off. Help us improve. Sorry about the format. Strategy: I think your function tries to do too much. As @knittl pointed out in the comments this can also be done with 1 array of Pair or something similar. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Before jumping into the code snippet tocount repeated words in a string in java take a look at these below things. Use MathJax to format equations. Did active frontiersmen really eat 20,000 calories a day? 594), Stack Overflow at WeAreDevelopers World Congress in Berlin, Temporary policy: Generative AI (e.g., ChatGPT) is banned, Preview of Search and Question-Asking Powered by GenAI, How to get an enum value from a string value in Java, How to round a number to n decimal places in Java. There might have been a way to find/replaced the spaces and hyphens and then find/replaced the duplicate phrases, but I didnt try that. It only takes a minute to sign up. The first one has 2 repeated characters but the second one has 3. OverflowAI: Where Community & AI Come Together, Behind the scenes with the folks building OverflowAI (Ep. Using the same input of the solution above, words with similar frequency will be bundled together. 594), Stack Overflow at WeAreDevelopers World Congress in Berlin, Counting words, letters, average word length, and letter frequency, Given two strings, a and b, determine the minimum number of character deletions required to make a and b anagrams, Find the most frequent character in a string, Leetcode #91 - Number of ways to decode a string, Coding Challenge: Return The Smaller String, Kattis challenge, processing string with special characters and conditions. Java - Find Most Repeated Character In String Using HashMap. rev2023.7.27.43548. How does this compare to other highly-active people in recorded history? Asking for help, clarification, or responding to other answers. We would like to show you a description here but the site won't allow us. Convert the string to char array using to toCharArray (). Thank you for your valuable feedback! A key is an object that is used to retrieve a value at a later date. . This article is being improved by another user right now. Mail us on h[emailprotected], to get more information about given services. Previous owner used an Excessive number of wall anchors. Making statements based on opinion; back them up with references or personal experience. is there an MLA style guide equivalent for code? By clicking Post Your Answer, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct. Can Henzie blitz cards exiled with Atsushi? We will save each word in a list after removing spaces and punctuation from the input string. Given a sequence of strings, the task is to find out the second most repeated (or frequent) string in the given sequence. 3: continue counting until you iterated over the entire String. Example Main idea What is a hash table? By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. In fact, to get the most frequent word, existing code needs to be modified slightly just to provide a variable for the most repeated variable which has to be updated when a more frequent word is detected. - Michael Split a line at a time and store in an array. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Enhance the article with your expertise. STEP 6: PRINT "Duplicate words in a given string:" STEP 7: SET i=0. Alaska mayor offers homeless free flight to Los Angeles, but is Los Angeles (or any city in California) allowed to reject them? Code Review Stack Exchange is a question and answer site for peer programmer code reviews. Or the intention is to code it on your own? First, Let us solve this problem using collection api HashMap class. What is Mathematica's equivalent to Maple's collect with distributed option? Do you have any ideas that might improve the number of processes that are required to find which word has the most repeats? the letters only need to be repeated in the word, not consecutive. This question can be done by using HashMap or file reader (I suppose) but actually, I haven't learned them yet. Time Complexity: O(N), where N represents the size of the given vector.Auxiliary Space: O(N), where N represents the size of the given vector. How can I find the shortest path visiting all nodes in a connected graph as MILP? *; import java.util.Map.Entry; Enter your email address to subscribe to this blog and receive notifications of new posts by email. where N represents the size of the given vector. Learn more about Stack Overflow the company, and our products. In this approach, Create the HashMap instance using new keyword. This article is contributed by Sahil Chhabra. Using for loop we start checking from the first substring and check for strings those are equal to current string and incrementing the count. Computer program is usually written by a computer programmer in programming language. Effect of temperature on Forcefield parameters in classical molecular dynamics simulations. You stated that you want to be able to query which words are most frequent "dynamically". there is no validation on the input characters . you should probably limit the chars to the, in Java, the standard code style puts the opening. Affordable solution to train a team and make them project ready. can you give me some pointers as of how can I find the most frequent word in an String? To find the second most repeated word in a sequence in Java, the code is as follows Example Live Demo Map<Character,Integer> map = new HashMap<Character,Integer> (); for (int i = 0; i < s.length (); i++) { char c = s.charAt (i); if (map.containsKey (c)) { int cnt = map.get (c); map.put (c, ++cnt); } else { map.put (c, 1); } } "Sibi quisque nunc nominet eos quibus scit et vinum male credi et sermonem bene". What is the least number of concerts needed to be scheduled in order that each musician may listen, as part of the audience, to every other musician? If you just want to find repeated words so you can manually examine whether they need to be corrected, Recipe 3.7 shows the code you need. You can use 2 arrays: one holds the words, one holds the count. Suppose, you have a sentence and you have to deal with each string(words) of the sentence then there we use split(). So, when querying the map for the highest count, both very and is will be returned as expected. The Map.Entry interface enables you to work with a map entry. Once I did that, all the words ran together, and THEN ( string worked. Assume we have taken a text file with the name ExampleTextFile.txt consisting of some random text. The connection is made using the same index value. Try to make do with run-time supplied classes. In order to do this, we have taken a sentence and split it into strings and compare each string with succeeding strings to find the frequency of the current string. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. This can be done by opening a file in read mode using file pointer. 1 @Uponn Ah, one of those poorly designed assignments that forces arbitrary constraints on students because they couldn't come up with an exercise that's actually appropriate for the material that they're teaching. Count number of lines in a text file in Python, Working with Highlighted Text in Python .docx Module, Working with Headers And Footers in Python .docx Module, Extract numbers from a text file and add them using Python, Highlight a Bar in Bar Chart using Altair in Python. And here is yet another solution using streams. Entries (RSS) Learn more about Stack Overflow the company, and our products. Set up a test scaffold to get your approach working. Find the first repeated word in a string in Python? I implemented this using priority queue and it is working fine. Any suggestions? What if you could reverse the map in order to group words with similar frequency together? If there is a tie, the character which appears first in the string (from left to right) should be returned. 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As you noticed, searching for your entries is adding to your time complexity, because you have to run down your queue. New! @greybeard One is private and should not bother the client programmer. Rhonda thank you!! How common is it for US universities to ask a postdoc to bring their own laptop computer etc.? Your email address will not be published. Connect and share knowledge within a single location that is structured and easy to search. So, as we see in input sentence I is repeating 2 times. Don't write naked code - use a foreach loop, or streams. Not the answer you're looking for? If there is a tie, the character which appears first in Why is the expansion ratio of the nozzle of the 2nd stage larger than the expansion ratio of the nozzle of the 1st stage of a rocket? (Fixing the indentation when someone botched a copy-and-paste job into the website would be OK, but that's not the case here.) A text editor or grep-like tool, such as those mentioned in Tools for Working with Regular Expressions in Chapter 1, can help you find repeated words while providing the context needed to determine whether . Ties are ignored. { "geeks", "for", "geeks", "a", "portal", "to", "learn", "can", "be", "computer","science", "zoom", "yup", "fire", "in", "be", "data", "a", "portal","geeks" }; Problem is to find most frequent word in array. The function repeat_first is called on this character array. Why is an arrow pointing through a glass of water only flipped vertically but not horizontally? Inside the main (), the String type variable name str is declared and initialized with string w3schools. I understood how to search for double specific words but not unspecified ones. The find and replace below uses wildcards to find any instance of duplicated words, followed by a space or a common punctuation mark, and then replaces that with a single word and the trailing space or punctuation. Or the intention is to code it on your own? If you like GeeksforGeeks and would like to contribute, you can also write an article using. 594), Stack Overflow at WeAreDevelopers World Congress in Berlin, Find the most frequent number in an array, Get the most frequent number and least frequent duplicate in array, Find the 'n' most frequent words in a text, aka word frequency, Most frequent element in an array, return lowest if multiple. Thank you for this! The second line contains an integer, . The function 'repeat_first' is called on this character array. acknowledge that you have read and understood our. Please mail your requirement at [emailprotected]. and Comments (RSS). Input word array is the string (from left to right) should be returned. 594), Stack Overflow at WeAreDevelopers World Congress in Berlin, Temporary policy: Generative AI (e.g., ChatGPT) is banned, Preview of Search and Question-Asking Powered by GenAI. I'm new to Java and I thought this would be a good way to learn. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. @Buddha The formatting of the code is an aspect that is subject to review in an answer, not to be silently fixed by editing the question. First, we have entered a string and then using split () string method. rev2023.7.27.43548. I've extracted part of the problem into a self-contained task: Given a word, how many times does the most frequent character appear? To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Good luck with that! Sci fi story where a woman demonstrating a knife with a safety feature cuts herself when the safety is turned off, Story: AI-proof communication by playing music, Continuous Variant of the Chinese Remainder Theorem. OverflowAI: Where Community & AI Come Together, Most frequent word in an array of strings - Java, Behind the scenes with the folks building OverflowAI (Ep. Arrays IE being used and this is case insensitive operation ?? INPUT are you are OUTPUT are: 2 This question can be done by using HashMap or file reader (I suppose) but actually, I haven't learned them yet. Buyer Terms and Conditions & Privacy Policy Refund Policy. Given a string, Find the 1st repeated word in a string Examples: Input : "Ravi had been saying that he had been there" Output : had Input : "Ravi had been saying that" Output : No Repetition Input : "he had had he" Output : he question source : https://www.geeksforgeeks.org/goldman-sachs-interview-experience-set-29-internship/ O(log N)but it's going to make your code messier dealing with edge cases. The best answers are voted up and rise to the top, Not the answer you're looking for? It just maintains a list of words to count and adjust the max while iterating thru the list. Find centralized, trusted content and collaborate around the technologies you use most. Java Program to Count repeated words in String June 1, 2019 1 Min Read Count Repeated Words: Following Java program to counts how many times a word appears in a String or find repeated words. different than 'a'). The relevant array is displayed on the console. send a video file once and multiple users stream it? How to Find the Most Repeated Word in a Text File using Python. You can reduce the variable scope of your static variables by accepting the array input as parameter and returning the queue. But I cant figure out the replace with part. If you run spellcheck, you may find them, but theres no guarantee of that. What are the differences between a HashMap and a Hashtable in Java? Through this program, we will find the most repeated word in a file. How to draw a specific color with gpu shader. replacing tt italic with tt slanted at LaTeX level? HashMap<String, Integer> wordCountMap = new HashMap<String, Integer> (); Step 2 : Create BufferedReader object to read the input text file. If frequency is greater than maxcount then store the frequency in maxcount and corresponding word that in variable word. Java Program to Find Duplicate Words And Their Occurrences in String With or Without Using Map Sandeep Verma Articles The program prints repeated words with number of occurrences in a given string using Map or without Map. How do I convert a String to an int in Java? THANK YOU THANK YOU for providing this. The "StringDup" problem asks us to: Create a class called StringDup. When you reached the end of the String save the count by assigning it to another variable (e.g. There are many ways to solve this problem. How to insert characters in a string at a certain position? (LogOut/ It shouldn't be that hard to follow the standard conventions for code formatting, and it will make things easier for yourself if you do. We initialize the count from 1 because we have to include the current string along with succeeding repeating string. (Considering no two words are the second most repeated, there will be always a single word). On average, this will halve your time spent searching: And a nitpick from an 'elegance' point of view: consider adding a method to MyWord that creates a new, incremented instance. Java Program to Capitalize the first character of each word in a String, Getting first letter of each word in a String using regex in Java, Find frequency of each word in a string in Java, How to replace only the first repeated value in a string in MySQL, C++ program to find Second most repeated word in a sequence. What is Mathematica's equivalent to Maple's collect with distributed option? How does this compare to other highly-active people in recorded history? STEP 8: REMOVE the punctuation marks. Input : str = " Ironman is alive. Share your suggestions to enhance the article. "Who you don't know their name" vs "Whose name you don't know", Previous owner used an Excessive number of wall anchors. mostFrequentCount('hello') should return 2). Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. How to find the highest repeated word from a File in Java Here is the Java program to find the duplicate word which has occurred a maximum number of times in a file. Why do code answers tend to be given in Python when no language is specified in the prompt? How to design the circuit to connect a status input and ground from the external device, to one of the GPIO pins on the ESP32. What mathematical topics are important for succeeding in an undergrad PDE course? See: The Pragmatic Programmer: From Journeyman to Master by Andrew Hunt and David Thomas: Dead Programs Tell No Lies. 1. How can I change elements in a matrix to a combination of other elements? The content of data.txt file used in the program is shown below. NOTE: This find/replace only finds words with the exact same case, so it will find 'the the', 'THE THE', and 'The The', but it won't find instances where each word has the same letters but with different cases (e.g. STEP 6: READ line from file STEP 7: By looping, CONVERT each line into lower case. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. No imports or libraries needed. To learn more, see our tips on writing great answers. create an array of counters for each character. With standard Sets - say, HashSets, keep a "global" set of your CountedWords to determine the count. We split the input string into substrings based on regular expression. What's the rule? A computer program is a collection of instructions that performs specific task when executed by a computer. By clicking Post Your Answer, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. How to print all files within a directory using Python? Crash early. How to adjust the horizontal spacing of a table to get a good horizontal distribution? Thank you for your valuable feedback! Create a class called StringDup. @Uponn but you explicitly mentioned not to use List , I havent , anyways whatever works for you. Using a comma instead of and when you have a subject with two verbs. I chose ;. MathJax reference. "aabbcc" has three letters that are repeated but only twice (2) each. I think Pattern is a bit oversized here. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, The future of collective knowledge sharing, 1) Remove punctuation 2) split sentence by spaces 3) map of words -> frequency 4) iterate map, get key with highest value, Maybe you could sort your array (after splitting the string) and count adjacent words, resetting on word changes, and looking for the max of repeats. I cannot use Maps, lists or so on. In the main function, the string is defined and a character array is defined. If you're allowed to use external libraries you could write it in a higher level of abstraction with Guava's Multisets and Iterables: Finally, a few unit tests with JUnit to make sure it works as intended: Thanks for contributing an answer to Code Review Stack Exchange! I posted and answer but then I tested your code and didn't get the same output so I deleted it. 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