c++: array / memory storage question?
I am writing a c++ program, describing the partition of heat (temperatures) along a 1 dimensional bar. This partition is according to a recursive algorithm (which I will not include here). The bar consists of 100 points that can have a temperature. So, after each second there will be an array with 100 members (the temperatures of the 100 points). Since the algorithm is recursive, a new array (at t seconds) has to be calculated using the members of the former array (at t-1 seconds). How can I combine such arrays with the for-loops necessary for the recursive algorithm? Am I to make a matrix of dimension 100*t, growing as t increases? For large t this would use a lot of memory storage. I would rather let the program remember the former array (t-1 seconds) until the algorithm has been applied and then replace this array with the array of time t in order to produce the array of time t+1 a.s.o. till the final time tf. How can this be done?
Thanks!
One doesn’t have to know science for this question. It concern arrays, matrices and recursion in c++. I included the background just to indicate why it bothers me.
Do you really need recurrence? Iteration seems to be enough.
Just keep 2 arrays in the mem at once:
<type>[100] measurements1;
<type>[100] measurements2;
1. Measure values and store into measurements1.
2. Call the measurements procedure. It would read measurements1 and store output into measurements2.
3. Save measurements1 to somewhere (disk?).
4. Copy measurements2 to measurements1 (you could operate on pointers and simply replace the pointers).
5. goto 2.
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