In other words, we need to find all the elements from the given array which have exactly occurred once.

Given Input : 

6,6,3,7,2,3,2

Expected output:

7

Java Program to Print All Distinct Elements in an Array

Program:

public class Main {

        public static void main(String[] args) {
            int[] arr = new int[]{6,6,3,7,2,3,2};
            int count;
            boolean flag = false;
            for(int i=0;i<arr.length;i++)
            {
                 count =  1;
                for(int j=0;j<arr.length;j++)
                {
                    if(arr[i] == arr[j] && (i !=j))
                    {
                        ++count;
                        break;
                    }
                }
                if(count==1) {
                    flag = true;

                    System.out.println(arr[i]);
                }

            }
            if(flag == false)
                System.out.println("Nothing is unqiue");

        }

}

Output: