first none duplicated char
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<s.length() ; ++i)
{
int c = s.charAt(i)-'a';
++arr[c];
}
pint(arr);
return false;
}
private static void pint(int[] arr){
int i = 0 ;
while(i < arr.length){
if(arr[i] == 1){
System.out.println("First none duplicated letters "+((char)(i+'a')));
}
++i;
}
}
}