How do I reverse a C vector

Question

Is there a vector function in C++ that can reverse a vector in place?

Or do you have to do it by hand?

Answer 1

The algorithm header has a method std::reverse for this purpose.

#include <vector>
#include <algorithm>

int main() {
  std::vector<int> a;
  std::reverse(a.begin(), a.end());
  return 0;
}