Using the C++ Code from below do the following:

1. Add a public method called frequency that accepts no argument and returns a two-dimensional array that holds the frequency of each data in the statistics that appear in the sample.

2. Rewrite the Statistics class from the code below as a generic class.

3. Rewrite the MovieStatistics class from the code below to apply the changes made on Statistic class.

Code:

#include  using namespace std; class Statistics { private: int* dataList; int dataSize; void sort(); public: Statistics(int n, int* data); ~Statistics(); double average(); int mode(); double median(); }; Statistics::Statistics(int n, int* data) { dataList = new int[n]; dataSize = n; for (int i = 0; i < n; i++) dataList[i] = data[i]; } Statistics::~Statistics() { delete dataList; } void Statistics::sort() { int min; for (int i = 0; i < dataSize - 1; i++) { min = i; for (int j = i + 1; j < dataSize; j++) { if (dataList[j] < dataList[min]) min = j; } if (min != i) { int temp = dataList[i]; dataList[i] = dataList[min]; dataList[min] = temp; } } } double Statistics::average() { double total = 0; for (int i = 0; i < dataSize; i++) total += dataList[i]; if (dataSize > 0) return total / dataSize; return 0; } int Statistics::mode() { sort(); int mode_cnt = 0, mode, cnt = 0; int i, j; for (i = 0; i < dataSize - 1;) { cnt = 1; for (j = i + 1; j < dataSize; j++) { if (dataList[j] == dataList[i]) cnt++; else break; } if (cnt > mode_cnt) { mode_cnt = cnt; mode = dataList[i]; } i = j; } if (mode_cnt > 1) return mode; return -1; } double Statistics::median() { sort(); if (dataSize > 0) { if (dataSize % 2 == 0) return((double)(dataList[dataSize / 2] + dataList[((dataSize - 1) / 2)])) / 2; else return dataList[(dataSize - 1) / 2]; } else return -1; } class MovieStatistics { public: void movieStatistics(); }; void MovieStatistics::movieStatistics() { int n; int* data; cout << "Enter the number of students surveyed: "; cin >> n; data = new int[n]; cout << "Enter the number of movies that each student saw: " << endl; for (int i = 0; i < n; i++) { cout << "Enter number of movies that student-" << (i + 1) << " saw: "; cin >> data[i]; } Statistics s(n, data); cout << "Average: " << s.average() << endl; cout << "Median: " << s.median() << endl; cout << "Mode: " << s.mode() << endl; delete data; } int main() { MovieStatistics ms; ms.movieStatistics(); return 0; }