Duplicate elements in java 8
This java code will publish the duplicate elements from a given list. Here we use a
set and method frequency to get a solution. But this can achieve multiple ways to get this
solution using java 8 streams.
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.Set;
import java.util.stream.Collectors;
public class DublicateList {
public static void main(String[] args) {
// 3, 4, 9 ,1
List<Integer> list = Arrays.asList(5, 3, 4, 1, 3, 7, 2, 9, 9, 4 ,4 ,1);
Set<Integer> result = findDuplicateByFrequency(list);
System.out.println("Dublicate elements list");
result.forEach(System.out::println);
System.out.println("Duplicate elements list");
}
public static <T> Set<T> findDuplicateByFrequency(List<T> list) {
return list.stream().filter(i -> Collections.frequency(list, i) > 1)
.collect(Collectors.toSet());
}
}
Programm output :
Duplicate elements list
1
3
4
9
No comments:
Add your comment