import java.util.*;
public class ArrayAddition {
    static void Pairs(int[] array, int x, ArrayList<String> list) {
        int y;
        String xyz;
        for (int i = 0; i < array.length; i++) {
            y = array[i];
            for (int j = 0; j < array.length; j++) {
                if (y + array[j] == x) {
                   xyz = Integer.toString(y) + " , " + Integer.toString(array[j]);
                   list.add(xyz);
                }
            }
        } ArrayAddition.Duplicates(list);
    } // End Pairs Function

    static void Duplicates(ArrayList<String> list) {
        String str;
        int counter = 0;
        for (int i = 0; i < list.size(); i++) {
            counter = 0;
            str = list.get(i);
            for (int j = 0; j < list.size(); j++) {
                if (str.equals(list.get(j))) {
                    counter++;
                    if (counter == 2) {
                        list.remove(j);
                    }
                }
            }
        } ArrayAddition.PrintArray(list);
    } // End PrintArray Function

    static void PrintArray(ArrayList<String> list) {
        for (int i = 0; i < list.size(); i++) {
            System.out.println(list.get(i));
        }
    } // End Duplicates Function

    public static void main (String[] args) {
        ArrayList<String> list = new ArrayList<>();
        int x = 7;
        int[] array = {2, 4, 3, 5, 6, -2, 4, 7, 8, 9 };
        ArrayAddition.Pairs(array, x, list);
    } // End Main
} // End Class