5. Assume you are located at location: pair (0.0, 0.0). Write a function that ta

Question

5. Assume you are located at location: pair (0.0, 0.0). Write a function that takes an arbitrary fleet of vehicles and returns the dosest and farthest vehicles in the fleet as a pair. You will need to modify the Vehide dass so that it can return the current location. Also, you should calculate the distance using the formula: d - vx2 y2). This function should have the following signature: pair 2/3 CloseAndFar(const vector& fleet). Hint: You should be able to use the following code in main and get the correct results // move vehicles for (auto vehicle :fleet) vehicle->SendToLocation(paircdouble, double>( 1.e, 10) (next(fleet.begin),3)))->sendToLocation(paircdouble, double>(e.s,.3)) Cprev(fleet.end), 2)))->SendToLocation(pair(5.5, 3.3)) // print status for (auto vehicle: fleet) vehicle->Status) /I find and print closest and farthest auto minmax-CloseAndFar(fleet); cout Status) I1 should be the 2nd to last vehicle

Explanation / Answer

pair<shared_ptr<Vehicle>,shared_ptr<Vehicle>> CloseAndFar(const vector<Vehicle>> &fleet){

      pair<shared_ptr<Vehicle>, shared_ptr<Vehicle>> d;
      double min = 1000;
      int minindex =-1;
      int maxindex = -1;
      double max = 0;
      for (int i = 0; i<fleet.size(); i++){
          pair<double,double> m = fleet.get(i).getLocation();
          double s = sqrt(m.first*m.first + m.second*m.second)
          if (s > max){
             max = s;
             maxindex = i;
          }
          if (s < min){
             min = s;
             minindex = i;
          }          
      }
      if (minindex != -1 && maxindex != -1){
          d.first = fleet[maxindex];
          d.second = fleet[minindex];
      }
      else {
          d.first = NULL;
          d.second = NULL;
      }
      return d;
}

Vehicle class should have a method:

Vechicle::Status(){
     cout << "Location: (" << location.first << "," << location.second << " )" << endl;

}

Vechicle::SendToLocation(pair<double,double> b){ // location is a memberin Vehicle class pair<double,double> locvation
     location.first = b.first;
     location.second = b.second;

}

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