array remove duplicate in java

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Nelson
26 May 2020
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
Pablo
27 May 2020
1public static <T> ArrayList<T> removeDuplicates(ArrayList<T> list){
2  Set<T> set = new LinkedHashSet<>(list);
3  return new ArrayList<T>(set);
4}
Anna
17 Jul 2018
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]
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