String dataString is read from input. Output each unique character found in dataString in the order that the character first appears, followed by a space $("").$

Ex: If the input is Kamilah, then the output is:

Unique characters found: K a m i l h

Note: dataString.indexOf$($dataString$.$charAt$($i$))==$ i returns true if dataString.charAt$($i$)$ occurs the first time at index i of dataString.

import java.util.Scanner;

public class ExtractUniqueCharacters $\{$

public static void main$($String$[]$ args$)\{$

Scanner scnr $=$ new Scanner$($System$.$in$)$;

String dataString;

int i;

dataString $=$ scnr$.$next$()$;

System.out.print$("$Unique characters found: $")$;

$/*$ Your code goes here $*/$

System.out.println$()$;

$\}$

$\}$