初始化使用嵌套的for循环二维数组的价值观 [英] Initialize Values of 2D Array using Nested For Loops

问题描述

我试图格式化数组如下：

I am trying to format an array that is the following:

[1] [2] [3] [4] [5]
[6] [7] [8] [9] [10]
[11] [12] [13] [14] [15]

我怎么能初始化二维数组和嵌套的值使用for循环？

How could I initialize the two dimensional array and the values using nested for loops?

推荐答案

我觉得你有二维数组的误解。想想他们beeing包含数组的数组。

I think you have a misunderstanding of two dimensional arrays. Think of them beeing arrays containing arrays.

如果你真的想这样的：

[[1] [2] [3] [4] [5]
[6] [7] [8] [9] [10]
[11] [12] [13] [14] [15]]

您可以将其初始化像这样：

You could initialize it like that:

int[][] array2d = new int[15][1]
for (int i = 0; i < array2d.length; i++) {
    array2d[i][0] = i + 1;
}

如果在FATC，你真正想要的是：

If in fatc, what you really want is:

[[1, 2, 3, 4, 5]
[6, 7, 8, 9, 10]
[11, 12, 13, 14, 15]]

您可以使用：

int[][] array2d = new int[3][5]
for (int i = 0; i < array2d.length; i++) {
    for (int j = 0; j < array2d[0].length; j++) {
        array2d[i][j] = (i * array2d[0].length) + j + 1;
    }
}

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