import java.util.Arrays;
import java.util.HashSet;
import java.util.Set;
public class Delete2 {
public static void main(String args[]) {
Integer[] inputArray = {1, 1, 3, 4, 4, 4, 4, 4, 5, 6, 7, 7};
Set<Integer> list = new HashSet<>(Arrays.asList(inputArray));
list.forEach(System.out::println);
}
}
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