title: Difference Maximum Sum Minimum Sum N M Elementsin Review
signature: differenceMaximumSumMinimumSumNMElementsinReview :: [Integer] -> Integer -> Integer -> Integer
  differenceMaximumSumMinimumSumNMElementsinReview arr n m = 
test_code: import Text.Printf
  import Control.Exception (catch, SomeException)
  import Data.Typeable
  import qualified Data.List as List
  import qualified Data.Map as Map
  import qualified Data.Set as Set
  
  -- SOLUTION CODE
  -- ============================================
  
  PLACEHOLDER_CODE_BODY
  
  -- TESTING CODE 
  -- ============================================
  validateSolution :: Integer -> Integer -> Bool
  validateSolution actual expected = do
      actual == expected
  
  
  driver :: [Integer] -> Integer -> Integer -> Integer -> String
  driver arr n m expected = do
      if (validateSolution (PLACEHOLDER_FN_NAME arr n m) expected)
          then "PASSED"
      else "FAILED"
  
  main = do
      printf "TEST-0...%s\n" (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) )
  
      printf "TEST-1...%s\n" (driver ([-92, -62, -50, -40, -32, -30, -18, -16, -14, -10, 24, 48, 54, 58, 94]) (8) (12) (206) )
  
      printf "TEST-2...%s\n" (driver ([0, 0]) (1) (1) (0) )
  
      printf "TEST-3...%s\n" (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) )
  
      printf "TEST-4...%s\n" (driver ([-90, -58, 6, 16, 20, 34, 36, 38, 48, 66, 82, 84, 86, 90, 90]) (14) (8) (528) )
  
      printf "TEST-5...%s\n" (driver ([0, 0, 0, 1, 1]) (3) (2) (0) )
  
      printf "TEST-6...%s\n" (driver ([7, 12, 15, 15, 21, 37, 40, 45, 50, 52, 53, 68, 68, 72, 75, 78, 86, 86, 88]) (16) (18) (2) )
  
      printf "TEST-7...%s\n" (driver ([-88, -20, 22, 44, 72, 94]) (4) (3) (132) )
  
      printf "TEST-8...%s\n" (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) )
  
      printf "TEST-9...%s\n" (driver ([4, 11, 21, 25, 26, 30, 32, 38, 60, 63, 65, 75, 77, 87, 87, 96]) (12) (15) (19) )
  
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 );
  }