[英]take one column from a 2D array and store in 1D
I am trying to take this 9 x 3 and use only the 3rd column to store in its own 1D array:我正在尝试使用这个 9 x 3 并仅使用第 3 列存储在它自己的一维数组中:
3 5 8
6 3 9
7 5 12
0 5 5
1 2 3
8 2 10
8 3 11
9 3 12
4 1 5
This is what I have for a conversion:这就是我要进行转换的内容:
int index = 0;
// 2D to 1D conversion
for (int r = 0; r < N; r++)
{
for (int c = 0; c < 3; c++)
{
end[index++] = start[r][c];
}
}
But it is giving me the first 9 numbers in the whole matrix:但它给了我整个矩阵中的前 9 个数字:
3 5 8
6 3 9
7 5 12 (but vertically)
I need the 3rd column only and I don't know what I am doing wrong.我只需要第三列,我不知道我做错了什么。
you can try this:你可以试试这个:
int index = 0;
// 2D to 1D conversion
for (int r = 0; r < N; r++)
{
end[index++] = start[r][2];
}
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