题解 | #明明的随机数#

public class Main{
      public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int i = scanner.nextInt();
        ArrayList<Integer> integers = new ArrayList<>();
        for(int j=0;j<i;j++) {
            Integer num = scanner.nextInt();
            if (!integers.contains(num)) {
                integers.add(num);
            }
        }
        //sort排序就完事了
        Collections.sort(integers);
        for(int k=0;k<integers.size();k++){
            System.out.println(integers.get(k));
        }
    }
}