title: Difference Maximum Sum Minimum Sum N M Elementsin Review
signature: func differenceMaximumSumMinimumSumNMElementsinReview(arr []int, n int, m int) int {
test_code: package main
  
  import (
      "fmt"
      "reflect"
      "math"
      "sort"
  )
  
  // SOLUTION CODE
  // ===================================
  PLACEHOLDER_CODE_BODY
  
  // TESTING CODE
  // ===================================
  func validateSolution(actual int, expected int) bool {
      return reflect.DeepEqual(actual,expected)
  }
  
  func driver(arr []int, n int, m int, expected int) string {
      if validateSolution(PLACEHOLDER_FN_NAME(arr, n, m),expected) {
              return "PASSED"
      }
      return "FAILED"
  
  }
  
  func main() {
  
      // Use imports to avoid undefined errors
      var _ = reflect.DeepEqual
      _ = math.Abs
      _ = sort.Sort
      result := ""
      result = driver([]int{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)
      fmt.Printf("TEST-0...%s\n", result)
      
      result = driver([]int{-92, -62, -50, -40, -32, -30, -18, -16, -14, -10, 24, 48, 54, 58, 94}, 
  	8, 
  	12, 206)
      fmt.Printf("TEST-1...%s\n", result)
      
      result = driver([]int{0, 0}, 
  	1, 
  	1, 0)
      fmt.Printf("TEST-2...%s\n", result)
      
      result = driver([]int{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)
      fmt.Printf("TEST-3...%s\n", result)
      
      result = driver([]int{-90, -58, 6, 16, 20, 34, 36, 38, 48, 66, 82, 84, 86, 90, 90}, 
  	14, 
  	8, 528)
      fmt.Printf("TEST-4...%s\n", result)
      
      result = driver([]int{0, 0, 0, 1, 1}, 
  	3, 
  	2, 0)
      fmt.Printf("TEST-5...%s\n", result)
      
      result = driver([]int{7, 12, 15, 15, 21, 37, 40, 45, 50, 52, 53, 68, 68, 72, 75, 78, 86, 86, 88}, 
  	16, 
  	18, 2)
      fmt.Printf("TEST-6...%s\n", result)
      
      result = driver([]int{-88, -20, 22, 44, 72, 94}, 
  	4, 
  	3, 132)
      fmt.Printf("TEST-7...%s\n", result)
      
      result = driver([]int{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)
      fmt.Printf("TEST-8...%s\n", result)
      
      result = driver([]int{4, 11, 21, 25, 26, 30, 32, 38, 60, 63, 65, 75, 77, 87, 87, 96}, 
  	12, 
  	15, 19)
      fmt.Printf("TEST-9...%s\n", result)
      
          
  }
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 );
  }