题解 | #明明的随机数#

import java.util.Scanner;

// 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);

        int n = in.nextInt();

        int[] arr = new int[n];
        for(int i = 0; i < n; i++){
            int num = in.nextInt();
            arr[i] = num;
        }

        
        for(int i = 0; i < arr.length -1; i++){
            for(int j = i + 1; j < arr.length; j++){

                if(arr[i ] > arr[j]){
                    int temp = arr[i];
                    arr[i] = arr[j];
                    arr[j] = temp;
                }

                if(arr[i] == arr[j]){
                    arr[j] = -1;
                }
            }
        }

        for(int i = 0; i < arr.length; i++){
            if(arr[i] != -1){
                System.out.println(arr[i]);
            }
        }        
    }
}