Tutorials, references, and examples are constantly reviewed to avoid errors, but we cannot warrant full correctness of all content. In this approach, we use regex to split the string into an array of words by using the regex / [a-zA-Z0-9]+/gi and then using for loop iterate the array and search the largest string. function findLongestWordLength (str) { let words = [] words.push (str); console.log (words) } findLongestWordLength ("The quick brown fox jumped over the lazy dog"); Your browser information: User Agent is: Mozilla/5.0 (X11; CrOS x86_64 11316.148.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/72..3626.117 Safari/537.36. Then use the for loop to map over the items in the array. So if we sort them in descending order, we could just return the length of the first word. Examples/Test Cases: Our provided test cases indicate that we probably wont be thrown any weird edge cases. DEV Community 2016 - 2023. OverflowAI: Where Community & AI Come Together, Find the longest word in a string using javascript, Behind the scenes with the folks building OverflowAI (Ep. Create an array with the length of each word. The search() cannot take a start position argument. There are a couple different strategies for this challenge, and I think it demonstrates that there is more than one good way to go about a problem. Once unsuspended, estheragbaje will be able to comment and publish posts again. How to Remove Whitespace Characters from a String in JavaScript. It's should pass all your tests, Yes, i added some edits to my answer later. As mentioned there are other ways, shorter ways, some would say better ways but I hope somebody finds some use from this post. 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? Built on Forem the open source software that powers DEV and other inclusive communities. Why do code answers tend to be given in Python when no language is specified in the prompt? Agree The challenge is to return the length of the longest word in a sentence (as a number). For this solution, we will use the String.prototype.split() method. How to Find the Longest Word in a String in JavaScript In today's pictorial, let's learn how to get the longest word in a given string. \n. Your response should be a number. $(function() {} );: What does it do in JavaScript? This is a classic algorithm scripting challenge. There are many way to find longest word in a string but we can use for this solution, we will use the Array.prototype.reduce(). It could be some embarassing, but I'm really new into JS and prior to be accepted in a BootCamp they asked me this excersice the which consist in finding the longest word in a string within the array. Thanks arrays Do we want them in ascending order? This method returns an array of words. 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? In the findLongestWord () method, we are using the split () method to get rid of spaces in the string. As you solve more of these algorithm challenges, you will notice there is rarely a direct easy path solution. ** If the search value is a string, it is converted to a regular expression. 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, Simplest way of getting the longest word in string using javascript, Find out the longest word from a sentence - Javascript, Javascript: find longest word in a string, Return length of longest word in string (Javascript), find & return the longest word in javascript, Finding the longest word in a string is not working, find the longest word in a string without using the split method. Updated on May 17, 2021. As a pangram it should contain all letters of the alphabet so the actual sentence is The quick brown fox jumps over the lazy dog so as to include a s! Very insightful. Instead of creating a local variable words, I just chained the map onto the split. Are you sure you want to hide this comment? Example: This example uses the above-explained approach. Some are shorter than others, some are easier to read than others. Now we have an array containing each word in our sentence as its own separate string. But if you can use this technique, then it could be very beneficial to know how it works! Hii i'm Rahul Jangir, a tech geek, designing enthusiast and an online expert, graduated in technology who is addicted to front-end development. This is part of my How to Solve FCC Algorithms series of articles on the Free Code Camp Algorithm Challenges, where I propose several solutions and explain step-by-step what happens under the hood. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. The search () method returns -1 if no match is found. You may think that you dont need to know this for your job or maybe youre not even a programmer. It will become hidden in your post, but will still be visible via the comment's permalink. Im a non-professional, self-taught web developer. Being able to look for multiple ways to solve a problem is one of the reasons I enjoy being a developer. Explanation You can add a second condition to your if statement to accomplish this. I think its because the return part comes first and then you compare, we see only one return. What is Robotic Process Automation (RPA)? You need to do this in order to give each "word" or item in the array a numerical value, i.e, index. I wrote this code the which Code above gives me the longest string, not the longest word of the array. DEV Community A constructive and inclusive social network for software developers. var strSplit = The quick brown fox jumped over the lazy dog.split( ); var strSplit = [The, quick, brown, fox, jumped, over, the, lazy, dog]. Understanding the Problem: Our input here is a string and our output is a number. Can Henzie blitz cards exiled with Atsushi? A string can have special characters and in our case, we have multiple dots. The input is converted into string through concatenation with an empty string so that it works when a number is passed as well. Are arguments that Reason is circular themselves circular and/or self refuting? In this algorithm, we want to look at each individual word and count how many letters are in each. Split the word into an array immediately using split(). Blender Geometry Nodes. **Your code so far** function findLongestWordLength(str) { const sentence = str.split() const word = str.split(" ") Would we consider them part of a word? After doing this, initialize the longest word to an empty string. We will need to add an empty space between the parenthesis of the split() method. Thanks. I would like a way to add to find the longest word either with other. For example, if the input to the function is For example If the string is const str = "Hardships often prepare ordinary people for an extraordinary destiny"; Then the output should be The single value we want to return in this case is the longest word. Enjoy unlimited access on 5500+ Hand Picked Quality Video Courses. With a for loop With sort method With reduce method main.js Let's create a main.js file and add the following code to it: Find the longest word in an array JavaScript [duplicate] Ask Question Asked 5 years ago Modified 5 years ago Viewed 16k times 0 This question already has answers here : Finding longest string in array (16 answers) How to sort an array based on the length of each element? Then we will compare all of them and print the longest word from the given string. .sort(function(firstElement, secondElement) {, freeCodeCamp Basic Algorithm Scripting: Find the Longest Word in a String. Connect and share knowledge within a single location that is structured and easy to search. The program takes following steps to find the longest string. 17 That's because you're not comparing all the items in the array, you leave out the last one. We will need to add an empty space between the parenthesis of the split () method, Once we get the exact length of each item, we only need to find the item with the maximum value. JavaScript Algorithms and Data Structures Basic Algorithm Scripting Find the Longest Word in a String Return the length of the longest word in the provided sentence. With you every step of your journey. Create your own server using Python, PHP, React.js, Node.js, Java, C#, etc. I am currently on a task in python and i need help with this and i am to. 1. What is telling us about Paul in Acts 9:1? The first thing is to split the string into an array. findLongestWord("The quick brown fox jumped over the lazy dog"); // ["The", "quick", "brown", "fox", "jumped", "over", "the", "lazy", "dog"], // ["jumped", "quick", "brown", "over", "lazy", "The", "fox", "the", "dog"]. You need to remove this line in your function: You function should be (added check if str is string): Simplified code with no arrays and no each statements. Solution #2: .sort( ) PEDAC. The search() method returns the index (position) of the first match. Asking for help, clarification, or responding to other answers. OverflowAI: Where Community & AI Come Together, How to find the longest word in a String within an Array in JS, Behind the scenes with the folks building OverflowAI (Ep. (with no additional restrictions), Using a comma instead of and when you have a subject with two verbs, Plumbing inspection passed but pressure drops to zero overnight. Food for thought. We're a place where coders share, stay up-to-date and grow their careers. Tampa native, coffee enthusiast, personal finance geek. Once suspended, estheragbaje will not be able to comment or publish posts until their suspension is removed. We will check each word one by one and count the length of characters and store it in a variable. Return the length of the longest word in the provided sentence. document.addEventListener("DOMContentLoaded", function() { document.body.addEventListener("click", function(event) { if (event.target.matches(".comment-reply-link, #cancel-comment-reply-link")) { turnstile.reset(".comment-form .cf-turnstile"); } }); }); By continuing to use the site, you agree to the use of cookies. Once unpublished, this post will become invisible to the public and only accessible to Stackfindover. Well the objective is to find the longest word, so if all have same length, you would get the first longest word in the string. The search() method returns the position of the first match. Understanding the Problem: Our input here is a string and our output is a number.Ultimately, we want to return the length of the longest word in the input string . Templates let you quickly answer FAQs or store snippets for re-use. Description The search () method matches a string against a regular expression ** The search () method returns the index (position) of the first match. With our team of qualified web and app developers and designers, we deliver unique and creative websites and applications to our clients across the wide range of sectors. Hello guys in this tutorial, we are going to learn how finding the longest word in a string using JavaScript. Find Longest Word in String with Reduce() Method You can provide an initial value as the second argument to reduce, here we will add an empty string . Some are faster. So, we match the item in the array with the string with the max length. In this article, I'm going to share with you 3 ways to find the longest word in a string using JavaScript. Are self-signed SSL certificates still allowed in 2023 for an intranet server running IIS? Well, I tried your solutions with console.log and it gives me 'Consomol', now I try to put it as an function and it gives me Undefined. Using an if/else block inside the reduce method will take the first word then the second and see which is longer. Am I betraying my professors if I leave a research group because of change of interest? Data Structure: We will likely have to split the string of words into an array of words in order to solve this challenge. which will output an array of separated words: If you dont add the space in the parenthesis, you will have this output: Heres my solution, with embedded comments to help you understand it: I hope you found this helpful. The split() method splits a String object into an array of strings by separating the . Use JavaScript regex to extract each word from the string. for (var i = 0; i < str.length - 1; i++) should be for (var i = 0; i < str.length; i++) or for (var i = 0; i <= str.length - 1; i++) Share Improve this answer Follow answered Jun 30, 2013 at 3:17 JavaScript TheOctagon3323February 1, 2022, 10:09pm #1 Hey guys, so this is what I managed to do on my own, I can't seem to find a way how I count the length of the words any advice for me? \n--hints--\n. findLongestWordLength(\"The quick brown fox jumped over the lazy dog\") should return a number. Explanation 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, Return length of longest word in string (Javascript), Finding the longest word in a string is not working, find the longest word in a string without using the split method. Here is what you can do to flag estheragbaje: estheragbaje consistently posts content that violates DEV Community's I primarily use Javascript for both frontend (REACTJS) and back end (NODEJS). Sample Solution: HTML Code: <!DOCTYPE html> <html> <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width"> <title> JavaScript to find the longest string from a given array of strings </title> </head> <body> </body> </html> JavaScript Code: If you have more ways of solving this, be sure to share them below! We can rewrite .sort() with our compareFunction using a and b as placeholder variables and using an arrow function to make the code look a little nicer: Below the code is cleaned up a little by getting rid of the local variable words, using an arrow function in .sort(), and removing comments. The last test case includes a dash, but it seems like (and it makes sense intuitively that) super-long is considered one whole word with the dash adding 1 to its length. Ultimately, we want to return the length of the longest word in the input string. Save my name, email, and website in this browser for the next time I comment. For further actions, you may consider blocking this person and/or reporting abuse. The longest word returns as the word with the longest index. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. john mwaura. But my code seem to only pass the first test case.Please what do i need to change to pass the other two first case considering i am new to javascript. I like the reduce usage here. How to Get Your Hands on Photoshop for Free, The Evolution of Xbox: Xbox Console Generations, The Evolution of PlayStation: PlayStation Console Generations, GPD G1 Graphics Card Expansion Dock Specs and Pricing. Find centralized, trusted content and collaborate around the technologies you use most. The reduce method for arrays applies a function to each element and an accumulator to reduce it to a single value. How can I find the shortest path visiting all nodes in a connected graph as MILP? Reverse a string & Find the Longest Word in a String JavaScript chunzg April 3, 2020, 12:26pm #1 Question 1: I am wondering why in the first solution, shown here: function reverseString (str) { for (var reversedStr = "", i = str.length - 1; i >= 0; i--) { reversedStr += str [i]; } return reversedStr; } Why the str.length has a -1 after it? Unflagging estheragbaje will restore default visibility to their posts. Making statements based on opinion; back them up with references or personal experience. I am a full-stack developer based in Oklahoma City. For further actions, you may consider blocking this person and/or reporting abuse. There are many way to find longest word in a string but we can use for this solution, we will use the Array.prototype.reduce (). function findLongestWord(str) { return str.length; } findLongestWord("The quick brown fox jumped over the lazy dog"); var strSplit = "The quick brown fox jumped over the lazy dog".split(' '); Hope I understood the question correctly - otherwise let me know.. ES1 (JavaScript 1997) is fully supported in all browsers: If you want to report an error, or if you want to make a suggestion, do not hesitate to send us an e-mail: W3Schools is optimized for learning and training. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, The future of collective knowledge sharing, what will be the output if all words inside string is of same length like :-. Reduce returns a single value. Most upvoted and relevant comments will be first. We are required to write a JavaScript function that takes in a string as the only argument. As with most things in coding there is more than one way to skin a cat. Asking for help, clarification, or responding to other answers. 1 xxxxxxxxxx function solution(inputArray) { return inputArray.reduce( (r, s, i) => { if (!i || r[0].length < s.length) { return [s]; } Approach 1: Using regex and forloop. If no compareFunction is provided, all non-undefined array elements are sorted by converting them to strings and comparing the strings in UTF-16 code units order, which is 100% not helpful to us. rev2023.7.27.43548. Finding the longest word in a string in JavaScript; Finding all valid word squares in JavaScript; Corresponding shortest distance in string in JavaScript; Finding mistakes in a string - JavaScript; Shortest Completing Word in Python; Finding word starting with specific letter in JavaScript; Finding duplicate "words" in a string - JavaScript In this basic algorithm scripting tutorial we find the longest word in a string. 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. Find the longest word in a string in JS using this code? W3Schools offers a wide range of services and products for beginners and professionals, helping millions of people everyday to learn and master new skills. send a video file once and multiple users stream it? First, as above in the sort example we use split again to get our string into an array of words. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, The future of collective knowledge sharing, Remember to always tag your question with the language you are using --. After doing that, map over the array to get the exact length of each item in the array. By using this website, you agree with our Cookies Policy. The indexOf() method cannot search against a regular expression. You can provide an initial value as the second argument to reduce, here we will add an empty string . Your email address will not be published. The match() method returns an array of matches. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Are modern compilers passing parameters in registers instead of on the stack? This returns the array in a descending order and we pick the first word, with an index of 0. If estheragbaje is not suspended, they can still re-publish their posts from their dashboard. Advertisements Accept the string in a function - findLengthLongest (). How to find the end point in a mesh line. Not the answer you're looking for? Below is the code without comments and cleaned up a little. Thanks for keeping DEV Community safe. Thanks for contributing an answer to Stack Overflow! Then it will take the result of this (the accumulator) and compare it to the third and so on finally returning the longest word, Now we just need to tack on.length to complete this challenge, As I am using ES2015s const and arrow functions I will show you a way of shortening the if/else code inside the reduce block using a ternary operator. (12 answers) Closed 5 years ago. Sort the array by length of word in descending order. Can a judge or prosecutor be compelled to testify in a criminal trial in which they officiated? To learn more, see our tips on writing great answers. In an if/else we compare then return one of the things we compared and we see a return for each option. There is no right way or wrong way. Javascript function longest (str) { We are required to write a JavaScript function that takes in string and returns an array with two string values, and they should be the smallest and largest words respectively from the string. Sci fi story where a woman demonstrating a knife with a safety feature cuts herself when the safety is turned off. split() takes a separator as an argument. If stackfindover is not suspended, they can still re-publish their posts from their dashboard. I just couldnt get my head around it which seems ridiculous as I use them all the time now! Next we sort our array of words by the length of each word. Find the Longest Word With a FOR Loop For this solution, we will use the String.prototype.split () method The split () method splits a String object into an array of strings by separating the string into sub strings. By testing the string in-place, I can find the longest word in only one pass, without duplicating it. Once unpublished, this post will become invisible to the public and only accessible to Esther Agbaje. If you continue to use this website without changing your cookie settings or you click "Accept" below then you are consenting to this. You may think that you don't need to know this for your job or maybe you're not even a programmer. We are using the map () method to loop through each word. 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