题解 | 单组_二维字符数组

import java.util.Scanner;
import java.util.Arrays;

// 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 m = in.nextInt(), n = in.nextInt();
        in.nextLine();
        String[] reversedLines = new String[m];
        for (int i = 0; i < m; i++) {
            String s = in.nextLine();
            StringBuilder sb = new StringBuilder();
            for (int j = n - 1; j >= 0; j--) {
                sb.append(s.charAt(j));
            }
            reversedLines[m - i - 1] = sb.toString();
        }
        Arrays.stream(reversedLines).forEach(System.out::println);
    }
}