package Testing;

import java.util.HashSet;

public class test {

public static void main(String[] args) {

String str = "reetikaaa";

boolean found = false;

int count = 0;

for(int i = 0; i <str.length();i++)

{

found = false;

char c = str.charAt(i);

for(int j =0; j <str.length(); j++)

{

if(c == str.charAt(j) && j!=i)

{

found = true;

break;

}

}

if(found)

{

count++;

if(count > 1) {

System.out.println(c);

}

}

}

}

}