What if a set of values does not fit in an array?

I am programming in C++. There is a very long set of numbers (more than 8 billion elements). All the numbers are real (type double). I have to calculate, for example, the average of all of these elements. So many numbers do not fit in any array or a vector. How to solve the problem? Is it solvable?

Solution

I am guessing your numbers are into a file or accessible through a stream. Just do the computation little by little or by chunks by reading a 1024 elements at a time for example. I don't think you will need to keep them all into the heap.

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