题解 | #明明的随机数#

import java.util.*;
public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int num = scanner.nextInt();// 输入随机整数的个数 N
        TreeSet<Object> treeSet = new TreeSet<>(new Comparator<Object>() {
            @Override
            public int compare(Object o1, Object o2) {
                return (int)o1 - (int)o2;
            }
        });
        for (int i = 0; i < num; i++) {
            treeSet.add(scanner.nextInt());
        }
        for (Object obj : treeSet) {
            int n = (int) obj;
            System.out.println(n);
        }
    }
}