resizing multidimensional vector

Question

How to resize multidimensional vector such as:

  vector  > > array; 

For example, I need arr

Answer 1

You should resize all the nested vectors one by one. Use nested for loops or recursion.

Answer 2

I did it))

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);
    }
}

Answer 3

see also Boost.MultiArray

Boost.MultiArray provides a generic N-dimensional array concept definition and common implementations of that interface.

Answer 4

array.resize(3,vector<vector<custom_type> >(5,vector<custom_type>(10)));

Answer 5

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[],...)