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C++ Way To Randomly Select M Numbers
This will randomly select M numbers from the interval [1, NMAX]. Note the extensive use of STL.
const short NMAX = 49; const short M = 6; std::vector<short> v; for (short i(0); i < NMAX; ++i) v.push_back(i + 1); random_shuffle(v.begin(), v.end()); copy(v.begin(), v.begin() + M, std::ostream_iterator<short>(std::cout, " "));