import java.util.*;

public class RemoveDuplicates {

    public static List<Integer> removeDuplicates(List<Integer> sortedList) {

        // Create a new list to store unique elements

        List<Integer> uniqueList = new ArrayList<>();

        for (int i = 0; i < sortedList.size(); i++) {

            // Add the element to the unique list if it is the first element

            // or if it is different from the previous element

            if (i == 0 || !sortedList.get(i).equals(sortedList.get(i - 1))) {

                uniqueList.add(sortedList.get(i));

            }

        }

        return uniqueList;

    }

    public static void main(String[] args) {

        List<Integer> sortedList = Arrays.asList(1, 2, 2, 3, 3, 3, 4, 4);

        List<Integer> result = removeDuplicates(sortedList);

        System.out.println("Input List: " + sortedList);

        System.out.println("List After Removing Duplicates: " + result);

    }

}