#include 
     
      #include 
      
       #include 
       
        using namespace std;class CountingSort {public:    int* countingSort(int* A, int n) {        // write code here        int* counting = new int[1000];        int* tmp = new int[n];        for(int i = 0; i < n; i++){            tmp[i] = A[i];        }        fill(counting, counting+1000, 0);        for(int i = 0; i < n; i++){            counting[A[i]]++;        }         for(int i = 1; i < 1000; i++){            counting[i] += counting[i-1];        }               cout<<"counting:"<
        
         = 0; j--){            A[counting[tmp[j]]-1] = tmp[j];            counting[tmp[j]]--;        }                delete [] tmp;        delete [] counting;        return A;    }};int main(){    int a[13] = {
   54,35,48,36,27,12,44,44,8,14,26,17,28};    int* res;    CountingSort sorter;    res = sorter.countingSort(a, 13);    cout<<"after sorting:"<