We use cookies to ensure you have the best browsing experience on our website. Please read our cookie policy for more information about how we use cookies.
  1. Prepare
  2. C++
  3. STL
  4. Vector-Sort
  5. Discussions

Vector-Sort

  • Oakamoore
     + 0 comments

    Instead of using a for loop paired with push_back() (which can result in allocations that could otherwise be avoided), use the explicit constructor, std::vector<T>(int) (requiring direct initialisation via a parenthesised list) which constructs a std::vector of a given size:

    int main()
{
    int size {};
    std::cin >> size;
    
    // Constructs a 'std::vector' of given size
    std::vector<int> v (size);
    
    // Loops through the vector by reference
    // setting its elements to inputted values
    for(auto& i : v)
        std::cin >> i;
        
    std::sort(v.begin(), v.end());
    
    for(auto i : v)
        std::cout << i << ' ';
    
    return 0;
}