注意要消耗掉换行符

import java.util.*;
public class Main{
    public static void main(String[] args){
        Scanner scanner = new Scanner(System.in);
        int n = scanner.nextInt();
        scanner.nextLine();  //消耗掉换行符
        String[] strs = new String[n];
        for(int i = 0; i < n; i++){
            strs[i] = scanner.nextLine();
        }

        Arrays.sort(strs);
        for(String str : strs){
            System.out.println(str);
        }
    }
}