Question

Add a member function template called RemoveRandom to the ArrayBag class (so add it to ArrayBag.h). The RemoveRandom member function should remove a random entry from the list (so use your srand and rand functions). Do not forget to TEST... that means you will need to add the prototype and test with a simple main. All you need to submit though is the member function implementation Add an overloaded constructor to the ArrayBag class (so add it to 2. ArrayBag.h). The overloaded constructor should accept an array(and array size) OR a vector as an argument and create an ArrayBag based on the array or vector passed into the constructor. Do not forget to TEST...that means you will need to add the prototype and test with a simple main. All you need to submit though is the member function implementation

Answer 1

THE CODE FOR THE ABOVE QUESTION IS :

#include <vector>
#include <iostream>
#include <string>
#include <time.h>
using namespace std;

template <typename T>
class ArrayBag
{
   private:
   vector<T> bag;
  
   public:
   // constructor
   ArrayBag(vector<T> arrayBag)
   {
       this->bag = arrayBag;
   }// end constructor
  
   // remove an item randomly
   void RemoveRandom(int index_to_remove)
   {
       T removed = bag.at(index_to_remove);
       bag.erase((bag.begin() + index_to_remove));
       cout << "Removed Element: " << removed << endl;
   }// end RemoveRandom
  
   // function to print the vector
   void printBag()
   {
       int size = this->bag.size();
       for(int i = 0; i < size ; i++)
           cout << this->bag.at(i) << " ";
       cout << endl;
   }// end printBag
};

int main()
{
   int n = 5;
   // creating vectors
   vector<int> v1 = {1,2,3,4,5};
   vector<float> v2 = {1.1,2.2,3.3,4.4,5.5};
   vector<string> v3 = {"Item1","Item2","Item3","Item4","Item5"};
  
   // creating array bag objects and initialising using constructor
   ArrayBag<int> a1(v1);
   ArrayBag<float> a2(v2);
   ArrayBag<string> a3(v3);
  
   srand(time(0));
   // testing out prototype
   cout << "ArrayBag 1: " ;
   a1.printBag();
   cout << "Removing an item randomly. " ;
   a1.RemoveRandom(rand() % n);
   cout << "ArrayBag 1: " ;
   a1.printBag();
   cout<<endl;
  
  
   cout << "ArrayBag 2: " ;
   a2.printBag();
   cout << "Removing an item randomly. " ;
   a2.RemoveRandom(rand() % n);
   cout << "ArrayBag 2: " ;
   a2.printBag();
   cout<<endl;

   cout << "ArrayBag 3: " ;
   a3.printBag();
   cout << "Removing an item randomly. " ;
   a3.RemoveRandom(rand() % n);
   cout << "ArrayBag 3: " ;
   a3.printBag();

   return 0;
}

SAMPLE OUTPUT:

ArrayBag 1: 1 2 3 45 Removing an item randomly. Removed Element: 5 ArrayBag 1 1 2 3 4 ArrayBag 2: 1.1 2.2 3.3 4.4 5.5 Removing an item randomly. Removed Element: 2.2 ArrayBag 2: 1.1 3.3 4.4 5.5 ArrayBag 3: Item1 Item2 Item3 Item4 Item5 Removing an item randomly. Removed Element: Item2 ArrayBag 3 Item1 Item3 Item4 Item5