Program to Remove Consecutive Repeated Characters from a Word

Write a program to input a word from the user and remove the consecutive repeated characters by replacing the sequence of repeated characters by its single occurrence.

Example:

INPUT – Jaaavvvvvvvvaaaaaaaaaaa
OUTPUT – Java

INPUT – Heeeiiiissggoiinggg
OUTPUT – Heisgoing

import java.io.*;

class RemoveRepChar

{

    public static void main(String args[])throws IOException

    {

        BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

        System.out.print("Enter any word: "); // Inputting the word

        String s = br.readLine();

 

        s = s + " "; // Adding a space at the end of the word

        int l=s.length(); // Finding the length of the word

        String ans=""; // Variable to store the final result

        char ch1,ch2;

 

        for(int i=0; i<l-1; i++)

        {

            ch1=s.charAt(i); // Extracting the first character

            ch2=s.charAt(i+1); // Extracting the next character

 

// Adding the first extracted character to the result if the current and the next characters are different

 

            if(ch1!=ch2)

            {

            ans = ans + ch1;

            }

        }

        System.out.println("Word after removing repeated characters = "+ans); // Printing the result

    }

}




Output:

Example 1:
Enter any word: Jaaavvvvvvvvaaaaaaaaaaa
Word after removing repeated characters = Java

Example 2:
Enter any word: iiiiiisssssfffffffffffffuunnnnn
Word after removing repeated characters = isfun