题解 | 单组_二维字符数组

import java.util.Scanner;
import java.util.ArrayList;
import java.util.List;

// 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);
        long a =in.nextLong();
        long b =in.nextLong();
        
        List<StringBuilder> s1 = new ArrayList<>();
        StringBuilder s2 =new StringBuilder();
        for(long i=0;i<a;i++){
            String s =in.next();
            s2.append(s);
            s1.add(new StringBuilder(s2).reverse());
            s2.setLength(0);
        }
        for(int i=s1.size()-1;i>=0;i--){
            System.out.println(s1.get(i));
        }
        
    }
}