java输入输出

import java.util.*;
public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        ArrayList<String> list = new ArrayList<>();
        int n = sc.nextInt();
        while(sc.hasNext()){
            list.add(sc.next());
        }
        Collections.sort(list);
        for(int i = 0; i < list.size() - 1; i++){
            System.out.print(list.get(i) + " ");
        }
        System.out.print(list.get(list.size() - 1));    //最后一个单独打印
    }
}