C++ 调整多维向量的大小
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resizing multidimensional vector
提问by qutron
How to resize multidimensional vector such as:
如何调整多维向量的大小，例如：
vector <vector <vector <custom_type> > > array;
For example, I need array[3][5][10]?
例如，我需要数组[3][5][10]？
采纳答案by Tony Delroy
You should resize all the nested vectors one by one. Use nested forloops or recursion.
您应该vector一一调整所有嵌套的s 的大小。使用嵌套for循环或递归。
回答by Matt
array.resize(3,vector<vector<custom_type> >(5,vector<custom_type>(10)));
回答by qutron
I did it))
我做到了））
array.resize(3);
for (int i = 0; i < 3; i++)
{
array[i].resize(5);
for (int j = 0; j < 5; j++)
{
array[i][j].resize(10);
}
}
回答by davka
see also Boost.MultiArray
Boost.MultiArray provides a generic N-dimensional array concept definition and common implementations of that interface.
Boost.MultiArray provides a generic N-dimensional array concept definition and common implementations of that interface.
回答by stefaanv
I would make a custom container containing a vector of vectors (of ... per dimension) and resize with resize-functions per dimension. This way you can put the invariant of equal size per dimension in one place. The actual resizing can then be done in a loop according to dimension.
There will be a bit of work involved in making public what needs to be accessed (operator[],...)
我会制作一个包含向量向量（每个维度的向量）的自定义容器，并使用每个维度的调整大小函数调整大小。通过这种方式，您可以将每个维度相同大小的不变量放在一个地方。然后可以根据维度在循环中完成实际的调整大小。
公开需要访问的内容（operator[],...）
