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  1. #include <algorithm>
  2. #include <iterator>
  3. #include <string>
  4. #include <vector>
  5. #include <list>
  6. #include <iostream>
  7.  
  8. bool funny_comp(const std::string &lhs, const std::string &rhs)
  9. { 
  10.    return (lhs.size() == rhs.size()) ? lhs < rhs
  11.                                      :  lhs.size() < rhs.size();
  12. }
  13.  
  14. int main()
  15. {
  16.  
  17.   std::vector<std::string> vec1{"and", "thus", "it", "has", "a", "beginning", "and", "end"};
  18.   std::vector<std::string> vec2{"and", "therefore", "stars", "are", "beginning", "to","fall","to","their", "end"};
  19.  
  20.   std::sort(vec1.begin(), vec1.end(), funny_comp);
  21.   std::sort(vec2.begin(), vec2.end(), funny_comp);
  22.   std::list<std::string> intersection;
  23.  
  24.   std::set_intersection(vec1.begin(), vec1.end(),
  25.                         vec2.begin(), vec2.end(),
  26.                         std::back_inserter(intersection),
  27.                         funny_comp);
  28.  
  29.   for (const auto& s : intersection)
  30.     std::cout << s << " ";
  31.   std::cout << std::endl;
  32.  
  33.  
  34. }
  35.  
Success #stdin #stdout 0s 3036KB
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Standard input is empty
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and end beginning
https://ideone.com/cvXpKq
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
secret

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