题解 | #明明的随机数#

import java.util.ArrayList;
import java.util.Comparator;
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);

        while(scan.hasNext()){
            int count = scan.nextInt();
            ArrayList<Integer> int_array = new ArrayList<>();
            for(int i = 0; i<count; i++){
                int value = scan.nextInt();
                int_array.add(value);
            }
            int_array.sort(Comparator.naturalOrder());
            for(int i=0; i<count; i++){
                if(i<count-1){
                    if(int_array.get(i)==int_array.get(i+1))
                        continue;
                }
                System.out.println(int_array.get(i));
            }
        }

    }
}