title: Difference Maximum Sum Minimum Sum N M Elementsin Review
signature: def differenceMaximumSumMinimumSumNMElementsinReview(arr: List[Int], n: Int, m: Int) = {
test_code: import scala.collection.mutable.HashMap
  import scala.collection.immutable.HashSet
  
  
  // SOLUTION CODE
  // ============================================
  PLACEHOLDER_CODE_BODY
  
  
  // TESTING CODE 
  // ============================================
  def validateSolution(actual: Int , expected: Int): Boolean = {
      actual.toString == expected.toString
  }
  
  def driver(arr: List[Int], n: Int, m: Int, expected: Int): String = {
      try {
          if (validateSolution(PLACEHOLDER_FN_NAME(arr, n, m),expected)) {
              "PASSED"
          } else{
              "FAILED"
          }
      }catch{
          case e: Exception => {e.getClass.getName}
      }
  
  }
  object QuestionEvaluator extends App {
  
      println(s"TEST-0...${driver(
        List(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    
      )}")   
  
  
      println(s"TEST-1...${driver(
        List(-92, -62, -50, -40, -32, -30, -18, -16, -14, -10, 24, 48, 54, 58, 94), 8, 12, 
        206    
      )}")   
  
  
      println(s"TEST-2...${driver(
        List(0, 0), 1, 1, 
        0    
      )}")   
  
  
      println(s"TEST-3...${driver(
        List(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    
      )}")   
  
  
      println(s"TEST-4...${driver(
        List(-90, -58, 6, 16, 20, 34, 36, 38, 48, 66, 82, 84, 86, 90, 90), 14, 8, 
        528    
      )}")   
  
  
      println(s"TEST-5...${driver(
        List(0, 0, 0, 1, 1), 3, 2, 
        0    
      )}")   
  
  
      println(s"TEST-6...${driver(
        List(7, 12, 15, 15, 21, 37, 40, 45, 50, 52, 53, 68, 68, 72, 75, 78, 86, 86, 88), 16, 18, 
        2    
      )}")   
  
  
      println(s"TEST-7...${driver(
        List(-88, -20, 22, 44, 72, 94), 4, 3, 
        132    
      )}")   
  
  
      println(s"TEST-8...${driver(
        List(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    
      )}")   
  
  
      println(s"TEST-9...${driver(
        List(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 );
  }