Solution to the Super Reduce String problem on Hackerrank. https://www.hackerrank.com/challenges/reduced-string

super_reduced_string.java

import java.io.*;
import java.util.*;


public class Solution {

    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        StringBuilder s = new StringBuilder(scan.nextLine());
        int i = 0;
        
        while (i < s.length() && s.length() > 1) {
            while (i < s.length() - 1 && s.charAt(i) == s.charAt(i + 1)) {
                s.deleteCharAt(i);
                s.deleteCharAt(i);
                
                if (i > 0) {
                    i--;
                }
            }
            i++;
        }

        System.out.println((s.length() > 0) ? s : "Empty String");
    }
}