题解 | #明明的随机数# 集合去重 排序

import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.Random;
import java.util.Scanner;
import java.util.stream.Collectors;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        List<Integer> list = new ArrayList<>();
        Integer size = Integer.valueOf(in.nextLine());
        for (int i = 1; i <= size; i++) {
            list.add(Integer.valueOf(in.nextLine()));
        }
        list = list.stream().distinct().sorted().collect(Collectors.toList());
        for (Integer str : list) {
            System.out.println(str);
        }
    }
}