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  1. #include <vector>
  2. #include <string>
  3. #include <iostream>
  4. #include <iomanip>
  5. #include <algorithm>
  6. #include <set>
  7. #include <iterator>
  8. #include <cstring>
  9.  
  10. using namespace std;
  11.  
  12.  
  13. int main()
  14. {
  15.     set<string> a{"aaa","bbb","ccc","ddd","eee","fff"};
  16.     set<string> b{"ddd","eee","fff","ggg","hhh","iii"};
  17.  
  18.     set<string> res;
  19.     set_intersection(a.begin(),a.end(),b.begin(),b.end(),
  20.                      inserter(res,res.begin()));
  21.     for(auto s: res) cout << s << endl;
  22.  
  23.     cout << "----------\n";
  24.  
  25.     set<const char*> c{"aaa","bbb","ccc","ddd","eee","fff"};
  26.     set<const char*> d{"ddd","eee","fff","ggg","hhh","iii"};
  27.  
  28.     set<const char*> r;
  29.     set_intersection(c.begin(),c.end(),d.begin(),d.end(),
  30.                      inserter(r,r.begin()),[](const char*x,const char*y){ return strcmp(x,y) < 0; });
  31.     for(auto s: r) cout << s << endl;
  32.  
  33.     cout << "----------\n";
  34.  
  35.     vector<const char*> e{"aaa","bbb","ccc","ddd","eee","fff"};
  36.     vector<const char*> f{"ddd","eee","fff","ggg","hhh","iii"};
  37.  
  38.     sort(e.begin(),e.end(),[](const char*x,const char*y){ return strcmp(x,y) < 0; });
  39.     sort(f.begin(),f.end(),[](const char*x,const char*y){ return strcmp(x,y) < 0; });
  40.  
  41.     vector<const char*> g;
  42.     set_intersection(e.begin(),e.end(),f.begin(),f.end(),
  43.                      back_inserter(g),[](const char*x,const char*y){ return strcmp(x,y) < 0; });
  44.     for(auto s: g) cout << s << endl;
  45.  
  46. }
  47.  
Success #stdin #stdout 0s 15248KB
comments (?)
stdin
copy 
Standard input is empty
stdout
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ddd
eee
fff
----------
ddd
eee
fff
----------
ddd
eee
fff
https://ideone.com/fFbU9L
language:
C++14 (clang 8.0)
created:
9 years ago
visibility:
public

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