public class MainClass {

    public static void main(String[] args)

    {

        int[] my_array = {1, 2, 5, 5, 6, 6, 7, 2, 9, 2};

        findDupicateInArray(my_array);

    }

    public static void findDupicateInArray(int[] a) {

        int count=0;

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

            for(int k =j+1;k<a.length;k++) {

                if(a[j]==a[k]) {

                    count++;

                }

            }

            if(count==1)

               System.out.println( "重复元素 : " +  a[j] );

            count = 0;

        }

    }

}