将一维数组索引转换为二维数组索引 [英] Convert 1D array index to 2D array index

问题描述

我有 2 个数组.我想将第一个数组的索引转换为第二个.有没有比我下面的方法更好的方法?

I have 2 arrays. I want to convert the index of the first array to the second. Is there a better way to do it than what I have below?

Array array1[9];
Array array2[3][3];

// Index is the index of the 1D array
public Point convert1Dto2D(int index)
{
        Point p = new Point();

        switch (index) {
            case 0:
                p.x = 0;
                p.y = 0;
                break;
            case 1:
                p.x = 0;
                p.y = 1;
                break;
            case 2:
                p.x = 0;
                p.y = 2;
                break;
            case 3:
                p.x = 1;
                p.y = 0;
                break;
            case 4:
                p.x = 1;
                p.y = 1;
                break;
            case 5:
                p.x = 1;
                p.y = 2;
                break;
            case 6:
                p.x = 2;
                p.y = 0;
                break;
            case 7:
                p.x = 2;
                p.y = 1;
                break;
            case 8:
                p.x = 2;
                p.y = 2;
                break;
        }

return p;
}

推荐答案

p.x = index / 3;
p.y = index % 3;

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