比较2D数组中行或列的元素(Java) [英] Compare elements of rows or columns in 2D array (Java)

问题描述

我有一个 String [] []字段.例如，它可能看起来像:

I have a String[][] field. For example, it may look like:

[xy] [xy] [xy] [xy] [xy]
[xy] [xy] [xy] [xy] [xy]
[xy] [xy] [xy] [xy] [xy]
[xy] [xy] [xy] [xy] [xy]
[xy] [xy] [xy] [xy] [xy]

行和列的数量相等，但是每次的数量可能不同.我需要检查整个行或整个列的元素值是否相等.我为3x3 field 编写了一些错误的代码来检查行，这里是:

Number of rows and columns is equal, but number may be different each time. I need to check if the values of elements of entire row or entire column are equal. I have written some bad code for 3x3 field to check line, here it is:

public boolean checkHorizontal(String[][] field) {
        boolean value = false;
        int x = 0;
        for (int i = 0; i < field.length; i++) {
            if (field[i][x].equals(field[i][x + 1]) &&
                    field[i][x + 1].equals(field[i][x + 2]) &&
                    !field[i][x].equals("[something]")) {
                value = true;
            }
        }
        return value;
    }

但这不是通用的检查行的方法，因为我们可能具有大小不同的矩阵(并且需要添加 x + 3 ， x + 4， x + 5 等)有没有有效的方法来比较2D数组的整个行/列?

But it's not universal way to check line, because we may have a matrix of different size (and need to add x + 3, x + 4, x + 5, etc.) Is there any effective way to compare entire row/column of 2D array?

推荐答案

要检查所有行:

for(int i = 0; i < field.length; i++){
    for(int j = 1; j < field[i].length; j++){
        if(!field[i][0].equals(field[i][j])){
            return false;
        }
    }
}

return true;

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