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well a very simple implementation for a 2D from single vector would be something like:



class twodeeintarray
{
public:
twodeeintarray(int x, int y) :
sizex(x),
sizey(y),

1) the suggested solution for using a vector of vectors works, but it's not identical.
With the vector of vectors, you get a bunch of memory areas (discontinuous) allocated to hold the actual data. ...