Java中的重复数据删除API

import java.util.Arrays;
import java.util.LinkedHashSet;
import java.util.Set;

public class RemoveDuplicates {
    public static void main(String[] args) {
        Integer[] arr = {1, 2, 3, 4, 4, 5, 6, 6, 7, 8, 9, 9};
        Set<Integer> set = new LinkedHashSet<>(Arrays.asList(arr));
        System.out.println("去重后的数组为：" + set);
    }
}