题解 | #明明的随机数# Java

俺用的bitmap，写完才发现还可以用TreeSet

import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        boolean[] bitMap = new boolean[501];
        while(n-->0){
            int tmp = sc.nextInt();
            bitMap[tmp]=true;
        }

        for(int i=1;i<=500;i++){
            if(bitMap[i]==true) {
                System.out.println(i);
            }
        }
    }
}