Java 代码

import java.util.Scanner;

public class Main
{
    public static void print2D (int[][] nums, int row, int col)
    {
        for (int i = 0; i < row; i ++)
        {
            for (int j = 0; j < col; j ++)
                System.out.print(nums [i][j] + " ");
            System.out.print("\n");
        }
    }
    public static void main(String[] args)
    {
        Scanner cin = new Scanner(System.in);

        int row = cin.nextInt();
        int col = cin.nextInt();

        int[][] nums = new int[row][col];

        for (int i = 0; i < row; i ++)
        {
            for (int j = 0; j < col; j ++)
            {
                nums[i][j] = cin.nextInt();
            }
        }

        print2D (nums, row, col);
    }
}