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  1. #include <vector>
  2. #include <algorithm>
  3. #include <iostream>
  4.  
  5. using namespace std;
  6.  
  7. struct Vector3D
  8. {
  9.    float x,y,z;
  10. };
  11.  
  12. bool operator < (const Vector3D& a, const Vector3D& b)
  13. {
  14.     if (a.x < b.x) return true;
  15.     if (a.x > b.x) return false;
  16.  
  17.     if (a.y < b.y) return true;
  18.     if (a.y > b.y) return false;
  19.  
  20.     if (a.z < b.z) return true;
  21.     if (a.z > b.z) return false;
  22.  
  23.     return false;
  24. }
  25.  
  26.  
  27. int main(int argc, char * argv[])
  28. {
  29.  
  30.     vector<Vector3D> v = {
  31.         {-0.5, -0.5, -0.5},
  32.         {0.0, -0.5, -0.5},
  33.         {0.5, -0.5, -0.5},
  34.  
  35.         {0.5, -0.5, 0.0},
  36.         {0.5, -0.5, 0.5},
  37.         {0.0, -0.5, 0.5},
  38.  
  39.         {-0.5, -0.5, 0.5},
  40.         {-0.5, -0.5, 0.0}
  41.     };
  42.  
  43.     sort(v.begin(),v.end());
  44.  
  45.     for(int i = 0; i < v.size(); ++i)
  46.         cout << v[i].x << "  " << v[i].y << "  " << v[i].z << endl;
  47.  
  48. }
  49.  
Success #stdin #stdout 0.01s 5448KB
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stdin
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Standard input is empty
stdout
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-0.5  -0.5  -0.5
-0.5  -0.5  0
-0.5  -0.5  0.5
0  -0.5  -0.5
0  -0.5  0.5
0.5  -0.5  -0.5
0.5  -0.5  0
0.5  -0.5  0.5
https://ideone.com/OIp2Pp
language:
C++14 (gcc 8.3)
created:
2 years ago
visibility:
secret

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