(C++) Answer of exercise \#9: No for-loops \#1

January 11, 2018 · View on GitHub

 

 

 

 

 

(C++) Answer of exercise #9: No for-loops #1

 

This is the answer of Exercise #9: No for-loops.

 

 

 

 

 

Question #1: AddTwo

 

Replace the for-loop. You will need:

 

#include <vector>   const std::vector<int> AddTwo(const std::vector<int>& v) {   std::vector<int> v_new(v); //Copy original vector   const int sz = v.size();   for (int i=0; i!=sz; ++i)   {     v_new[i]+=2;   }   return v_new; }

 

 

 

 

 

Answer

 

#include <vector> #include <algorithm> #include <numeric> const std::vector<int> AddTwo(const std::vector<int>& v) {   std::vector<int> v_new;   std::transform(v.begin(),v.end(),std::back_inserter(v_new),     std::bind2nd(std::plus<int>(),2));   return v_new; }