fork download
copy 
  1. #include <utility>
  2. #include <algorithm>
  3. #include <string>
  4. #include <iostream>
  5. #include <map>
  6.  
  7. using namespace std;
  8.  
  9. int main () {
  10.  
  11.  
  12.    std::map<string,int> map1;
  13.  
  14. 	map1["ymax"]=10;
  15. 	map1["ymin"]=16;
  16. 	map1["xval"]=10;
  17.  
  18. 	std::map<string,int> map2;
  19.  
  20. 	map2["ymax"]=16;
  21. 	map2["ymin"]=20;
  22. 	map2["xval"]=28;
  23.  
  24. 	std::map<string,int> map3;
  25.  
  26. 	map3["ymax"]=16;
  27. 	map3["ymin"]=20;
  28. 	map3["xval"]=10;
  29.  
  30.     vector<map<string,int>> v{map1, map2, map3};
  31.  
  32.     std::sort(v.begin(), v.end(), [](std::map<string,int> &lhs, std::map<string,int> &rhs){
  33.     	return tie(lhs["ymax"], lhs["ymin"], lhs["xval"]) < tie(rhs["ymax"], rhs["ymin"], rhs["xval"]);
  34.     });
  35.     for(map<string,int> my_map : v){
  36. 		 cout << "ymax"  << ", " << my_map["ymax"] << endl;
  37.  		 cout << "ymin"  << ", " << my_map["ymin"] << endl;
  38. 		 cout << "xval"  << ", " << my_map["xval"] << endl;
  39. 		 cout << "=======================\n";
  40.     }
  41. }
  42.  
  43.  
Success #stdin #stdout 0s 3500KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
ymax, 10
ymin, 16
xval, 10
=======================
ymax, 16
ymin, 20
xval, 10
=======================
ymax, 16
ymin, 20
xval, 28
=======================
https://ideone.com/enBvNG
language:
C++14 (gcc 8.3)
created:
7 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!