Java Program To Find Duplicate Words In A Sentence Using Hashmap

Public class DuplicatewordsUsingHashmap public static void mainString args HashMap wordsCnt new HashMap. Finally iterate over HashMap keyset and check with each keys value if it is greater than 1 then it is a duplicate word.


Annotations Hashmap And Lists In Java By Harsh Parashar Medium

Java Program to find the most repeated word in a text file.

Java program to find duplicate words in a sentence using hashmap. This program is purely to remove the visible duplicates present in a sentence and not to count the duplicates. Now lets figure out how to remove these duplicate words. HashMap map new HashMap.

This can be done by opening a file in read mode using file pointer. Systemoutprintln Enter an input sentence. ID_TAGSentrySet HashMap cloneWithoutTag new HashMap TAGS_TRANSLATIONS.

Use one for loop to scan each word in the array. For example blue sky and blue ocean in this blue is repeating word with 2 times occurrence. Each word is stored as key and the count as value.

Given below is a Java program to find the number of occurrences of each word in a sentence or String. HashMap Hashtable and ConcurrentHashMap but for general purpose HashMap is good enough. Split the string into words.

If it is present then increment the count or else insert the character in the hashmap with frequency 1. Create a hashMap of type char int. To remove all duplicate words from a given sentence the Java code is as follows Example Live Demoimport javautilArrays.

Scanner inpStr new Scanner Systemin. This is also similar to the problem of finding duplicate characters in String. Checking for Duplicacy in an array using Hashing Technique in Java.

If a match found then increment the count by 1 and set the duplicates of word to 0 to avoid counting it again. The following program is strictly character sensitive ie make. This is the second solution to identify the duplicate words in a given input sentence of strings using the HashMap methods.

Now traverse through the hashmap and look for the characters with frequency more than 1. We are passing s as regex to this function. Split the given string and store the words into a String array.

If it is not in the HashMap then store the word as key and 1 as the initial value. Traversing the array check if the word is in the HashMap or not. Declare a HashMap in Java of.

List wordsArraysasList sentencesplit. Means words will be separated by blank space. Public static void main String args.

Read the file line by line. Inner loop will compare the word selected by outer loop with rest of the words. Int id egetKey.

If you are writing a Java program to find duplicate characters in a String and displaying the repetition count using HashMap then you can store each char of the String as a key and starting count as 1 which becomes the value. In this program we need to find the most repeated word present in given text file. In short just use HashMap instead of HashSet to keep count of duplicate words in the sentence.

Public class DuplicatewordsUsingFrequency. String sentence inpStrnextLine. ForEntry e.

Traverse the string check if the hashMap already contains the traversed character or not. If the word is present in the HashMap then increase the value against the word. Public class Details public void countDupCharsString str Create a HashMap Map map new HashMap.

Iterate through the array and find the frequency of each word and compare the frequency with maxcount. I want to save the duplicate value in a variable named String duplicate. Split the string into an array of words using split function.

In each iteration check if key already exists if yes then increment the count by accessing the value for that key. Outer loop will select a word and Initialize variable count to 1. This program would find out the duplicate characters in a String and would display the count of them.

Thank you all for your help Ill try your tips. String tag egetValue. Java Program to find duplicate Characters in a String.

I want the output a. Java provides several implementation of hash table data structure eg. Create one HashMap to store each word and count of that word.

If you want to count or find the duplicates in a sentence you can refer to the following link. Split a line at a time and store in an array. Public class DuplicateWordSearcher SuppressWarningsunchecked public static void mainString args String text a r b k c d se f.

Return public Set findDuplicates Set duplicates new LinkedHashSet. If HashMap contains word then increment its value by 1 and If a word is not present put that word as key and value as 1. The program prints repeated words with number of occurrences in a given string using Map or without Map.

It first creates an array from given string using split method and then after considers as any word duplicate if a word come atleast two times. We are reading words one by one. Two loops will be used to find duplicate words.


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