Java中如何优雅地打印格式化二维数组（乘法表为例）

         1  2  3  4  5  6  7  8  9 10
         2  4  6  8 10 12 14 16 18 20
         3  6  9 12 15 18 21 24 27 30
         ...
        10 20 30 40 50 60 70 80 90 100

import static java.lang.System.out;
import java.util.Arrays;
import java.util.Scanner;

public class MatrixPrinter {

    void program() {
        Scanner sc = new Scanner(System.in);
        out.print("Give me the size of your wished multiplication table : ");
        int a = sc.nextInt();
        int[][] multiplication = new int[a][a];

        for (int head = 0 ; head < a ; head++) {
            int base = head + 1; // base starts from 1
            for (int side = 0; side < a ; side++) {
                int number = side + 1; // number starts from 1
                multiplication[head][side] = base * number;
            }
        }

        // 尝试使用Arrays.toString()和replace()进行打印
        for (int[] s : multiplication) {
            out.println((Arrays.toString(s)).replace("[","").replace("]",""));
        }
        sc.close();
    }

    public static void main(String[] args) {
        new MatrixPrinter().program();
    }
}

1, 2, 3, 4, 5, 6, 7, 8, 9, 10
2, 4, 6, 8, 10, 12, 14, 16, 18, 20
3, 6, 9, 12, 15, 18, 21, 24, 27, 30
...

// 假设 multiplication 是一个已填充的二维 int 数组
for(int[] row : multiplication) {
    for(int col : row) {
        System.out.printf("%-3d", col); // 打印每个元素，左对齐，占用3个字符宽度
    }
    System.out.println(); // 每打印完一行后换行
}

import java.util.Scanner;

public class FormattedMatrixPrinter {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        System.out.print("请输入您希望的乘法表大小 (例如10): ");
        int size = sc.nextInt();

        // 1. 初始化并填充二维数组（乘法表）
        int[][] multiplicationTable = new int[size][size];
        for (int i = 0; i < size; i++) {
            for (int j = 0; j < size; j++) {
                multiplicationTable[i][j] = (i + 1) * (j + 1);
            }
        }

        // 2. 打印格式化的乘法表
        System.out.println("\n生成的乘法表如下：");
        for (int[] row : multiplicationTable) {
            for (int col : row) {
                // 使用printf格式化每个数字：左对齐，占用至少3个字符宽度
                System.out.printf("%-3d", col); 
            }
            System.out.println(); // 每打印完一行后换行
        }

        sc.close();
    }
}

请输入您希望的乘法表大小 (例如10): 10

生成的乘法表如下：
1  2  3  4  5  6  7  8  9  10 
2  4  6  8  10 12 14 16 18 20 
3  6  9  12 15 18 21 24 27 30 
4  8  12 16 20 24 28 32 36 40 
5  10 15 20 25 30 35 40 45 50 
6  12 18 24 30 36 42 48 54 60 
7  14 21 28 35 42 49 56 63 70 
8  16 24 32 40 48 56 64 72 80 
9  18 27 36 45 54 63 72 81 90 
10 20 30 40 50 60 70 80 90 100