问题
I have an array of 2D-arrays. For example, it is like:
{{{0, 0, 1}, {1, 0, 0}}
{{0, 0, 3}, {2, 1, 2}, {2, 2, 1}, {3, 0, 0}}
{{0, 0, 7}, {3, 2, 6}, {6, 2, 3}, {6, 3, 2}, {7, 0, 0}}}
But If I write
int [,][] arrays={{{0, 0, 1}, {1, 0, 0}}
{{0, 0, 3}, {2, 1, 2}, {2, 2, 1}, {3, 0, 0}}
{{0, 0, 7}, {3, 2, 6}, {6, 2, 3}, {6, 3, 2}, {7, 0, 0}}};
the compiler will complain "; expected".
If I write
int [,][] arrays={new int[,] {{0, 0, 1}, {1, 0, 0}}
new int[,] {{0, 0, 3}, {2, 1, 2}, {2, 2, 1}, {3, 0, 0}}
new int[,] {{0, 0, 7}, {3, 2, 6}, {6, 2, 3}, {6, 3, 2}, {7, 0, 0}}};
the compiler will complain
"A nested array initializer is expected".
So why does this happen and what is the correct way of initialization?
回答1:
You're trying to create jagged array. Your array has n
rows so your first square should be [] not [,]. Element in each row (index of n
) is 2D array so you need to use [,]
. Finally, you can fix your problem by change int [,][]
to int[][,]
.
int[][,] arrays = {
new int[,] {{0, 0, 1}, {1, 0, 0}},
new int[,] {{0, 0, 3}, {2, 1, 2}, {2, 2, 1}, {3, 0, 0}},
new int[,] {{0, 0, 7}, {3, 2, 6}, {6, 2, 3}, {6, 3, 2}, {7, 0, 0}}
};
回答2:
An array of 2d arrays is a 3d array:
int[, ,] array3D = new int[,,] { { { 1, 2, 3 } }, { { 4, 5, 6 } } };
Also see more at MSDN http://msdn.microsoft.com/en-us/library/2yd9wwz4(v=VS.90).aspx
来源:https://stackoverflow.com/questions/7775458/how-to-initialize-an-array-of-2d-arrays