Longest word in string java

I need this program to find the longest word in a String in Java

how can I construct longest word from letters and check it with vocab in dict that I have before Thank you Solution: Prepare an array of dictionary words, but such that the letters of each entry are sorted; sort the dictionary itself by word size, descending; sort the letters in your input string in the same order as in the dictionary; go through the dictionary top-to-bottom and find the first entry whose all letters are present in the input. Solution 2: This approach worked for me Question: suppose I have and I have dictionary to check in the form of arrays.

I need this program to find the longest word in a String in Java

import java.util.*; class Exam3 < public static void main(String[] args) < Scanner sc = new Scanner(System.in); System.out.print("Enter a String: "); String word1 = "", word2 = ""; int l1 = 0, l2 = 0; while(sc.hasNext()) < word1 = sc.next(); l1 = word1.length(); if(l1 >l2) < l2 = l1; word2 = word1; >> System.out.println("Longest Word: " + word2); System.out.println("Length of Word: " + l2); > > 

The code isn’t working. Prompting the user is successful, but nothing else happens. If you input a String and press Enter, it goes to the next line, where you can input again, etc. etc.

There should be a exit condition in the loop. Please use the following code.

import java.util.Scanner; public class LongestString < public static void main(String[] args) < Scanner sc = new Scanner(System.in); System.out.print("Enter a String: "); String word1 = "", word2 = ""; int l1 = 0, l2 = 0; while (sc.hasNext()) < word1 = sc.next(); // type exit finish the loop if (word1.equals("exit")) break; l1 = word1.length(); if (l1 >l2) < l2 = l1; word2 = word1; >> sc.close(); System.out.println("Longest Word: " + word2); System.out.println("Length of Word: " + l2); > > 

This approach worked for me

public class actual < public static void main(String[] args) < Scanner sc = new Scanner(System.in); System.out.print("Enter a String: "); int largestLength = 0; String largestWord = ""; String a = sc.nextLine(); for(String b:a.split(" "))< if (largestWord.length() == 0) < largestLength = b.length(); largestWord = b; >else if (b.length() >= largestLength) < largestLength = b.length(); largestWord = b; >> sc.close(); System.out.println("Longest Word: " + largestWord); System.out.println("Length of Word: " + largestLength); > > 

Java — Find longest word in a sentence recursively, First, in longestWord () the sentence gets split by its spaces, producing an array of words. From that point on, the method longest () …

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How to find longest word from given letters.<java&gt

and I have dictionary to check in the form of arrays.

how can I construct longest word from letters and check it with vocab in dict that I have before

1. Prepare an array of dictionary words, but such that the letters of each entry are sorted;
2. sort the dictionary itself by word size, descending;
3. sort the letters in your input string in the same order as in the dictionary;
4. go through the dictionary top-to-bottom and find the first entry whose all letters are present in the input. Due to sorting this can be implemented as O(n).

char[] toSort = original.toCharArray(); Arrays.sort(toSort); String sorted = new String(toSort); 

Arrays.sort(dict, (String a, String b) -> b.length() - a.length()); 

boolean isMatch(String dictWord, String inputWord) < for (int i = 0, j = 0; i < dictWord.length();) < if (j >= inputWord.length()) return false; char d = dictWord.charAt(i), n = inputWord.charAt(j); if (d < n) return false; if (d >= n) j++; if (d == n) i++; > return true; > 

Java — Find the longest word in a String, it returns the longest word as «ying» because when it replaces ‘cut’ with » » for the first time, it removes all the ‘a’-s too, such that it becomes » boy is …

Longest word in java recursively [duplicate]

Possible Duplicate:
How can I find the longest word in a string recursively?

I need help in finding the longest word in java.. I think i got the base case right but the recursive is not working for me.. any help would be appreciated..

public static String longestWord(String sentence) < int spaceIndex = sentence.indexOf(" "); if (spaceIndex == -1) < return sentence; >String firstWord = sentence.substring(0, spaceIndex); String rest = sentence.substring(spaceIndex); rest = rest.trim(); if (firstWord.length() >= longestWord(rest).length() ) < IO.outputStringAnswer(firstWord); return firstWord; >else < IO.outputStringAnswer(rest); return rest; >> 

It is almost correct, but you return wrong value in the else block.

You just have to adapt your output in the else case — now it returns (and outputs) the rest of the sentence, while you want it to return the longest word of the rest.

To understand the problem, take a example sentence and some paper, and do your algorithm by hand.

• First, try it for simple sentences (one word, two words). It seems to work here.
• Next, take a 3-word sentence like «Was it right» ?. Does it work here? If not, why? What do you need to change?

Java — Find the longest word in a string recursively, The base case is where a space isn’t found, i.e. the sentence passed in is just one word. In this case simply return the sentence. In the recursive case …

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Java java find longest word in a string

Solution 2: // the below Java Program will find Smallest and Largest Word in a String ** ** Solution 3: instead it should be: Given a string, we have to find the longest word in the input string and then calculate the number of characters in this word. C++ JavaPython3 C#PHPJavascript Output: Another Approach: C++14Java Python3 C#Output: Solution 1: There should be a exit condition in the loop.

How to find the longest word in a given string?

Here is a «one-liner» you can use with the Java 8 streams API:

import java.util.Arrays; import java.util.Comparator; public class Main < public static void main(String[] args) < String s = "Today is the happiest day of my life"; String longest = Arrays.stream(s.split(" ")) .max(Comparator.comparingInt(String::length)) .orElse(null); System.out.println(longest); >> 

Try it out here .

// the below Java Program will find Smallest and Largest Word in a String

class SmallestAndLargestWord < static String minWord = "", maxWord = ""; static void minMaxLengthWords(String input) < // minWord and maxWord are received by reference // and not by value // will be used to store and return output int len = input.length(); int si = 0, ei = 0; int min_length = len, min_start_index = 0, max_length = 0, max_start_index = 0; // Loop while input string is not empty while (ei else < // end of a word // find curr word length int curr_length = ei - si; if (curr_length < min_length) < min_length = curr_length; min_start_index = si; >if (curr_length > max_length) < max_length = curr_length; max_start_index = si; >ei++; si = ei; > > // store minimum and maximum length words minWord = input.substring(min_start_index, min_start_index + min_length); maxWord = input.substring(max_start_index, max_length); > // Driver code public static void main(String[] args) < String a = "GeeksforGeeks A Computer Science portal for Geeks"; minMaxLengthWords(a); // to take input in string use getline(cin, a); System.out.print("Minimum length word: " + minWord + "\nMaximum length word: " + maxWord); >> 

Input : "GeeksforGeeks A computer Science portal for Geeks" Output : Minimum length word: A Maximum length word: GeeksforGeeks 

Return the longest word in a string, Loop through the words and If the current word have more length than previous word,then make longest word as current word.So at the end you will get longest

How to find the Longest Word in Sentence using Java 8?

Find the Longest Word in a String

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Find longest word in string in Java

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Program for length of the longest word in a sentence

Given a string, we have to find the longest word in the input string and then calculate the number of characters in this word.

Input : A computer science portal for geeks Output : Longest word's length = 8

Input : I am an intern at geeksforgeeks Output : Longest word's length = 13

The idea is simple, we traverse the given string. If we find end of word, we compare length of ended word with result. Else, we increment length of current word.

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Write a java program to find longest word in the sentence

Write a program that finds the longest word from a sentence. Your program should read a sentence as input from the user and return the longest word. In case there are two words of maximum length return the word which comes first in the sentence.

Input and Output Format

• Input consists of a string with a maximum size of 100 characters.
• The output consists of a single string.

Refer sample output for formatting specifications

Sample Input 1:

Welcome to the world of Programming

Sample Output 1:

Sample Input 2:

Sample Output 2:

Java program to find the longest word in the sentence using String Tokenizer

• Input a string.
• Pass the string to the lengthiestString() method.
• Now, inside this method, first, initialize the variable max to 0 and create a new string s2.
• Use the StringTokenizer class to break the string into tokens.
• Now, iterate the string till it has tokens. Move the token into a new string and calculate the length.
• Here, check if the length is greater than the next token and store it in the s2 string, and at last return the longest token.

package testCases; import java.util.Scanner; import java.util.StringTokenizer; public class MainJava < public static void main(String[] args) < Scanner sc = new Scanner(System.in); String s1= sc.nextLine(); System.out.println(lengthiestString(s1)); >public static String lengthiestString(String s1) < int max=0; String s2=new String(); StringTokenizer t=new StringTokenizer(s1," "); while(t.hasMoreTokens())< String s3=t.nextToken(); int n=s3.length(); if(n>max) < max=n; s2=s3;>> return s2; > >

Output

Program in Java to find the Longest word in a sentence

This is another approach to finding longes word. Following are the steps to find the longest word in the sentence:

• Input a sentence.
• Now, split the sentence into words using the split() method and store it into an array of words.
• Now, set a variable longest word length to 0.
• Then, check all the words and compare the length with the longest variable length and print the longest word.

package com.date; import java.util.Scanner; public class LongestWord < public static void main(String[] args) < Scanner scanner = new Scanner(System.in); String input_string = scanner.nextLine(); String [] words = input_string.split(" "); String longest_word = ""; int longest_word_len = 0; for(int i= 0; i < words.length;i++)< String word = words[i]; int len = word.length(); if(len >longest_word_len ) < longest_word = word; longest_word_len = len; >> System.out.println(longest_word); > >

Output

Longest word in a sentence using Java 8 version

We can find the longest word using Java 8 features easily. Following are the steps to achieve this:

• First, input string using nextLine() method.
• Now, use the Java 8 feature and find the longest word in one line using the below steps:
  • Create an array of streams and pass the sentence to the method and split it based on the space.
  • Call the method max to find the maximum which accepts the Comparator interface. Call the comapreInt() method and pass the string length using the method reference.
  • And, for the other case pass null.

  package com.date; import java.util.Arrays; import java.util.Comparator; import java.util.Scanner; public class Main5 < public static void main(String[] args) < Scanner scanner = new Scanner(System.in); String input_string = scanner.nextLine(); String longest_word = Arrays.stream(input_string.split(" ")).max(Comparator.comparingInt(String::length)).orElse(null); System.out.println(longest_word); >>

  Output

  

  Thus, in this way, we learn How to find the longest word in the string in Java.

  Additionally, Check These java program Articles Too:

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  How to Get Longest Word in Sentence in Java

  When given a string of space-separated words, return the word with the longest length.

  If there are multiple words with the longest length, return the last instance of the word with the longest length.

  'red white blue' // returns string value of white 'red blue gold' // returns gold 

  The solution in Java code#

  public class Solution < public static String longestWord(String wordString) < String longest = ""; for (String word: wordString.split(" ")) if (word.length()>=longest.length()) longest = word; return longest; > > 

  import java.util.Arrays; public class Solution < public static String longestWord(String words) < return Arrays.stream(words.split(" ")) .reduce((x, y) ->x.length() > 

  import java.util.*; public class Solution < public static String longestWord(String wordString) < final String [] ary = wordString.split(" "); Arrays.sort(ary, (a,b) ->a.length() >= b.length() ? -1 : 1); return ary[0]; > > 

  Test cases to validate our solution#

  import org.junit.Test; import static org.junit.Assert.assertEquals; import org.junit.runners.JUnit4; public class ExampleSolutionTests < @Test public void tests() < assertEquals("fgh", Solution.longestWord("a b c d e fgh")); assertEquals("three", Solution.longestWord("one two three")); assertEquals("grey", Solution.longestWord("red blue grey")); >> 

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Источник

How to Get Longest Word in Sentence in Java

When given a string of space-separated words, return the word with the longest length.

If there are multiple words with the longest length, return the last instance of the word with the longest length.

'red white blue' // returns string value of white 'red blue gold' // returns gold 

The solution in Java code#

public class Solution < public static String longestWord(String wordString) < String longest = ""; for (String word: wordString.split(" ")) if (word.length()>=longest.length()) longest = word; return longest; > > 

import java.util.Arrays; public class Solution < public static String longestWord(String words) < return Arrays.stream(words.split(" ")) .reduce((x, y) ->x.length() > 

import java.util.*; public class Solution < public static String longestWord(String wordString) < final String [] ary = wordString.split(" "); Arrays.sort(ary, (a,b) ->a.length() >= b.length() ? -1 : 1); return ary[0]; > > 

Test cases to validate our solution#

import org.junit.Test; import static org.junit.Assert.assertEquals; import org.junit.runners.JUnit4; public class ExampleSolutionTests < @Test public void tests() < assertEquals("fgh", Solution.longestWord("a b c d e fgh")); assertEquals("three", Solution.longestWord("one two three")); assertEquals("grey", Solution.longestWord("red blue grey")); >> 

Top Related Articles

1. Maximum Different of Int-Array in Java
2. Indexed Capitalization in Java
3. How to Spacify a String in Java
4. How to Validate Usernames with Regex in Java
5. Sort Lexicographical Order of Substrings in Java
6. How to Perform Alphabetical Addition in Java
7. How to Encrypt Words in Java
8. How to Fold an Array in Java
9. Delete Occurrences of an Element if it occurs more than N times in Java
10. How to Validate Phone Numbers in Java

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