import java.util.Scanner;

public class FirstDuplicate
{
    private static Scanner scanner = new Scanner(System.in);
    public static void main(String[] args)
    {
        System.out.println("Enter random chars");
        String s = new String(scanner.nextLine());
        findTheFirstDublicate(s);

    }
    private static boolean findTheFirstDublicate(String s)
    {
        int[] arr = new int[26];

        for(int i=0 ; i