Java Ice Breakers

How to find the duplicate words in a sentence of strings

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by

anagendrakumar2020
in ,

This is the first solution to identify the duplicate words in a given input sentence of strings, using the core logic.

import java.util.Scanner;

public class Duplicatewords {

	public static void main(String[] args) {
		// TODO Auto-generated method stub

		Scanner inpStr=new Scanner(System.in);
		System.out.println("Enter any sample sentence");
		String sentence=inpStr.nextLine();
		String [] words=sentence.split(" ");
		String repWords = "";

		//Traversing through the split words array using nested for loop and comparing each word with remaining words
		for(int i=0;i<words.length;i++) {
			for(int j=i+1;j<words.length;j++) {
				if(words[i].contentEquals(words[j])) {
					//Maintaining the repeated words string to avoid displaying the message every time when same word encounters
					if (!repWords.contains(words[i])) {
						repWords=repWords.concat(words[i]).concat(" ");
						System.out.println("The word="+words[i]+" is repeated");
						continue;
					}
				}
			}
		}
		inpStr.close();
	}
}
Try it >>
Enter any sample sentence
 This example demonstrates that This example, This example repeated
 The word=This is repeated
 The word=example is repeated

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