1import java.util.*;
2
3public class RemoveDuplicatesFromArrayList {
4
5 public static void main(String[] args) {
6 List<Integer> numbers = Arrays.asList(1,2,2,2,3,5);
7
8 System.out.println(numbers);
9
10 Set<Integer> hashSet = new LinkedHashSet(numbers);
11 ArrayList<Integer> removedDuplicates = new ArrayList(hashSet);
12
13 System.out.println(removedDuplicates);
14 }
15}
16
1public static <T> ArrayList<T> removeDuplicates(ArrayList<T> list){
2 Set<T> set = new LinkedHashSet<>(list);
3 return new ArrayList<T>(set);
4}
1List<Integer>numbers = Arrays.asList(1,2,2,2,3,5); // [1, 2, 3, 5]
2System.out.println(numbers);
3
4Set<Integer> hashSet = new LinkedHashSet(numbers);
5ArrayList<Integer> removedDuplicates = new ArrayList(hashSet);
6System.out.println(removedDuplicates); // [1, 2, 3, 5]