algorithm - C++ Vector elements' index -

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#include <iostream> #include <vector>  int main() {  std::vector<int> v = {1, 2, 3, 4};   }

is there efficient way push "4" 1's place , push every other element next index. vector's element order {4, 1, 2, 3} instead. have thought of few ways, wondering if there elegant , more efficient way it.

thanks in advance!

this looks tailor-made std::rotate:

std::rotate(v.begin(), v.begin()+3, v.end());

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