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  1. #include <iostream>
  2. #include <vector>
  3. #include <iterator>
  4. #include <string>
  5. #include <algorithm>
  6. #include <numeric>
  7.  
  8. using namespace std;
  9.  
  10. template<typename It>
  11. void replace(
  12. 	It beg, 
  13. 	It end, 
  14. 	typename iterator_traits<It>::value_type const& oldval, 
  15. 	typename iterator_traits<It>::value_type const& newval)
  16. {
  17. 	while ((beg = find(beg, end, oldval)) != end)
  18. 	{
  19. 		*beg = newval;
  20. 		++beg;
  21. 	}
  22. }
  23.  
  24. template<typename T>
  25. void rearrange_vector(vector<int> nInd, vector<T> &v)
  26. {
  27. 	size_t indx; 
  28. 	for (size_t ie(v.size()), i(0); i < ie; ++i)
  29. 	{
  30. 		auto it = find(nInd.begin(), nInd.end(), i);
  31. 		if (nInd.end() != it)
  32. 		{
  33. 			indx = distance(nInd.begin(), it);
  34. 			swap(v.at(i), v.at(indx));
  35. 			replace(nInd.begin(), nInd.end(), indx, i);
  36. 		}
  37. 	}
  38. }
  39.  
  40. int main() 
  41. {
  42. 	vector<string> firstnames = { "Bjarne",     "Alexander",  "Dennis",   "James",   "James"   };
  43.     vector<string> lastnames  = { "Stroustrup", "Stepanov",   "Ritchie",  "Coplien", "Gosling" };
  44.  
  45.     vector<int> indices(firstnames.size());
  46.     iota(indices.begin(), indices.end(), 0);
  47.  
  48.     sort(indices.begin(), indices.end(), [&](int i1, int i2){
  49.     	return firstnames[i1] < firstnames[i2]; 
  50.     });
  51.  
  52.     rearrange_vector(indices, firstnames);
  53.     rearrange_vector(indices, lastnames);
  54.  
  55.     for (size_t i(0), ie(firstnames.size()); i < ie; ++i)
  56.     {
  57.     	cout << firstnames[i] << " " << lastnames[i] << endl;
  58.     }
  59.  
  60. 	return 0;
  61. }
Success #stdin #stdout 0s 3480KB
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Alexander Stepanov
Bjarne Stroustrup
Dennis Ritchie
James Coplien
James Gosling
https://ideone.com/Wv5JcQ
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
public

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