如何将2d数字数组转换为2d字符串数组？

# 定义一个2D数字数组
num_array = [[1, 2, 3], [4, 5, 6], [7, 8, 9]]

# 将2D数字数组转换为2D字符串数组
str_array = [[str(num) for num in inner_array] for inner_array in num_array]

# 输出结果
for row in str_array:
    print(row)

// 定义一个2D数字数组
let numArray = [[1, 2, 3], [4, 5, 6], [7, 8, 9]];

// 将2D数字数组转换为2D字符串数组
let strArray = numArray.map(innerArray => innerArray.map(num => String(num)));

// 输出结果
strArray.forEach(row => console.log(row));

import java.util.Arrays;

public class Main {
    public static void main(String[] args) {
        // 定义一个2D数字数组
        int[][] numArray = {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}};

        // 将2D数字数组转换为2D字符串数组
        String[][] strArray = new String[numArray.length][];
        for (int i = 0; i < numArray.length; i++) {
            strArray[i] = Arrays.stream(numArray[i]).mapToObj(String::valueOf).toArray(String[]::new);
        }

        // 输出结果
        for (String[] row : strArray) {
            System.out.println(Arrays.toString(row));
        }
    }
}

using System;

class Program
{
    static void Main(string[] args)
    {
        // 定义一个2D数字数组
        int[,] numArray = { { 1, 2, 3 }, { 4, 5, 6 }, { 7, 8, 9 } };

        // 将2D数字数组转换为2D字符串数组
        string[,] strArray = new string[numArray.GetLength(0), numArray.GetLength(1)];
        for (int i = 0; i < numArray.GetLength(0); i++)
        {
            for (int j = 0; j < numArray.GetLength(1); j++)
            {
                strArray[i, j] = numArray[i, j].ToString();
            }
        }

        // 输出结果
        for (int i = 0; i < strArray.GetLength(0); i++)
        {
            for (int j = 0; j < strArray.GetLength(1); j++)
            {
                Console.Write(strArray[i, j] + " ");
            }
            Console.WriteLine();
        }
    }
}