title: Difference Maximum Sum Minimum Sum N M Elementsin Review
signature: int differenceMaximumSumMinimumSumNMElementsinReview(vector<int> arr, int n, int m) {
test_code: #include <algorithm>
  #include <assert.h>
  #include <cstdlib>
  #include <iostream>
  #include <map>
  #include <set>
  #include <string>
  #include <tuple> 
  #include <unordered_map>
  #include <vector>
  #include <math.h>
  #include <cmath>
  #include <bits/stdc++.h>
  #include <numeric>
  #include <functional>
  
  using namespace std;
  
  // SOLUTION CODE
  // ============================================
  PLACEHOLDER_CODE_BODY
  
  // TESTING CODE 
  // ============================================
  bool validateSolution(int actual, int expected){
      return actual == expected;
  }
  
  string driver(vector<int> arr, int n, int m, int expected){
      try
      {
          if (validateSolution(PLACEHOLDER_FN_NAME(arr, n, m), expected)){
              return "PASSED";
          }
          return "FAILED";
      }
      catch (const std::overflow_error& exception_obj)
      {
          return typeid(exception_obj).name();
      }
      catch (const std::runtime_error& exception_obj)
      {
          return typeid(exception_obj).name();
      }
      catch (const std::exception& exception_obj)
      {
          return typeid(exception_obj).name();
      }
      catch (...)
      {
          return "UNK_ERROR";
      }
  }
  
  int main() {
      string result = "";
  
      result = driver({2, 3, 6, 16, 21, 22, 23, 27, 27, 28, 29, 29, 31, 31, 37, 37, 38, 40, 41, 43, 51, 52, 53, 55, 55, 56, 57, 63, 67, 67, 67, 72, 75, 79, 82, 84, 91, 92, 93, 96, 96, 97}, 21, 25, 167); 
      cout << "TEST-" << 0 << "..."
           <<  result
           << "\n";
  
      result = driver({-92, -62, -50, -40, -32, -30, -18, -16, -14, -10, 24, 48, 54, 58, 94}, 8, 12, 206); 
      cout << "TEST-" << 1 << "..."
           <<  result
           << "\n";
  
      result = driver({0, 0}, 1, 1, 0); 
      cout << "TEST-" << 2 << "..."
           <<  result
           << "\n";
  
      result = driver({1, 2, 2, 4, 5, 6, 7, 9, 10, 11, 11, 12, 13, 13, 16, 17, 21, 24, 29, 29, 34, 44, 44, 48, 49, 51, 54, 56, 59, 62, 63, 65, 65, 65, 71, 71, 76, 77, 77, 80, 83, 83, 84, 89, 91, 97, 99}, 31, 34, 92); 
      cout << "TEST-" << 3 << "..."
           <<  result
           << "\n";
  
      result = driver({-90, -58, 6, 16, 20, 34, 36, 38, 48, 66, 82, 84, 86, 90, 90}, 14, 8, 528); 
      cout << "TEST-" << 4 << "..."
           <<  result
           << "\n";
  
      result = driver({0, 0, 0, 1, 1}, 3, 2, 0); 
      cout << "TEST-" << 5 << "..."
           <<  result
           << "\n";
  
      result = driver({7, 12, 15, 15, 21, 37, 40, 45, 50, 52, 53, 68, 68, 72, 75, 78, 86, 86, 88}, 16, 18, 2); 
      cout << "TEST-" << 6 << "..."
           <<  result
           << "\n";
  
      result = driver({-88, -20, 22, 44, 72, 94}, 4, 3, 132); 
      cout << "TEST-" << 7 << "..."
           <<  result
           << "\n";
  
      result = driver({0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1}, 25, 17, 8); 
      cout << "TEST-" << 8 << "..."
           <<  result
           << "\n";
  
      result = driver({4, 11, 21, 25, 26, 30, 32, 38, 60, 63, 65, 75, 77, 87, 87, 96}, 12, 15, 19); 
      cout << "TEST-" << 9 << "..."
           <<  result
           << "\n";
  
      return 0;
  }
source_py: def difference_maximum_sum_minimum_sum_n_m_elementsin_review(arr, n, m):
      max = 0
      min = 0
      arr.sort()
      j = (n - 1)
      for i in range(m):
          min += arr[i]
          max += arr[j]
          j = (j - 1)
      return (max - min)
source_cpp: int difference_maximum_sum_minimum_sum_n_m_elementsin_review(vector<int> arr, int n, int m) {
    int max = 0, min = 0;
    sort(arr.begin(), arr.end());
    for ( int i = 0, j = n - 1;
    i < m;
    i ++, j -- ) {
      min += arr [ i ];
      max += arr [ j ];
    }
    return ( max - min );
  }