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c++c++11stlstdvectoriota

Set std::vector<int> to a range

What's the best way for setting an std::vector<int> to a range, e.g. all numbers between 3 and 16?

Solution

  • You could use std::iota if you have C++11 support or are using the STL:

    std::vector<int> v(14);
std::iota(v.begin(), v.end(), 3);

    or implement your own if not.

    If you can use boost, then a nice option is boost::irange:

    std::vector<int> v;
boost::push_back(v, boost::irange(3, 17));