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 n = scanner.nextInt();
        TreeSet<Integer> set = new TreeSet<>();
        for(int i =0;i<n;i++){
            set.add(scanner.nextInt());
        }
        boolean flag = false;
        for(int e:set){
            if(flag==false){
                System.out.print(e);
                flag = true;
            }
            else {
                System.out.println();
                System.out.print(e);
            }
        }
    }
}