Initialization of std::vector with a list of consecutive unsigned integers

Question

I want to use a special method to initialize a std::vector which is described in a C++ book I use as a reference (the German book \'Der C++

Answer 1

there are at least three ways that you can do that. One was mentioned earlier by Brian

//method 1
generate(v.begin(), v.end(), [] { static int i {1}; return i++; });     

You can also use std::iota if you are using c++11

//method 2
iota(v.begin(), v.end(), 1);

Or instead you can initialize your container with 1s and then do a partial sum on that. I don't think anybody will use this third method anyway :)

//method 3
vector v(n, 1);                                                     
partial_sum(v.begin(), v.end(), v.begin());