题解 | 明明的随机数

import java.util.Scanner;
import java.util.*;
import java.util.Collections;

// 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 inputNumber = 0;
        int totalNumber = 0;
        HashSet<Integer> inputSet = null;
        while(in.hasNext()){
            String inputString = in.next();
            if(inputNumber == 0 && inputString != null && inputString != "") {
                inputSet = new HashSet();
                totalNumber = Integer.valueOf(inputString);
                inputNumber++;
                continue;
            }
            if(inputString != null && inputString != "") {
                inputNumber++;
                inputSet.add(Integer.valueOf(inputString));
            }
         
        }
        if(inputSet == null || inputSet.size() < 1) {
            return;
        }
        List<Integer> noneSortList = new ArrayList(inputSet);
        Collections.sort(noneSortList);
        for(Integer loop: noneSortList) {
            System.out.println(loop);
        }
    }
}