title: How To Check If A Given Array Represents A Binary Heap 1
signature: def howToCheckIfAGivenArrayRepresentsABinaryHeap1(arr: List[Int], n: Int) = {
test_code: import scala.collection.mutable.HashMap
  import scala.collection.immutable.HashSet
  
  
  // SOLUTION CODE
  // ============================================
  PLACEHOLDER_CODE_BODY
  
  
  // TESTING CODE 
  // ============================================
  def validateSolution(actual: Boolean , expected: Boolean): Boolean = {
      actual.toString == expected.toString
  }
  
  def driver(arr: List[Int], n: Int, expected: Boolean): String = {
      try {
          if (validateSolution(PLACEHOLDER_FN_NAME(arr, n),expected)) {
              "PASSED"
          } else{
              "FAILED"
          }
      }catch{
          case e: Exception => {e.getClass.getName}
      }
  
  }
  object QuestionEvaluator extends App {
  
      println(s"TEST-0...${driver(
        List(2, 2, 2, 7, 10, 14, 24, 38, 42, 50, 59, 60, 72, 73, 79, 83, 89), 9, 
        false    
      )}")   
  
  
      println(s"TEST-1...${driver(
        List(-48, 98, 96, -56, -2, 58, 52, -50, 58, 50, 62, 86, -26, -98, 34, 20, -28, 56, -36), 9, 
        false    
      )}")   
  
  
      println(s"TEST-2...${driver(
        List(0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1), 20, 
        false    
      )}")   
  
  
      println(s"TEST-3...${driver(
        List(91, 50, 37), 2, 
        true    
      )}")   
  
  
      println(s"TEST-4...${driver(
        List(-80, -26, 0, 0, 6, 14, 22, 76, 82, 88, 98), 10, 
        false    
      )}")   
  
  
      println(s"TEST-5...${driver(
        List(1, 0), 1, 
        true    
      )}")   
  
  
      println(s"TEST-6...${driver(
        List(9, 24, 24, 33, 48, 50, 55, 61, 69, 79, 83), 8, 
        false    
      )}")   
  
  
      println(s"TEST-7...${driver(
        List(30, 32, -82, -48, 88, -24, 74, 2, 90, 98, 68, 82, 32, -60, 2, -94, 18, 14, 46, 50, -60, -74, -76, 66, -76, -34, -20, 82, -44, -62, 34, 48, -56, 2, 64, -78, -64, 98, -10, -28, 78, -42), 27, 
        false    
      )}")   
  
  
      println(s"TEST-8...${driver(
        List(0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1), 6, 
        false    
      )}")   
  
  
      println(s"TEST-9...${driver(
        List(38, 74, 99, 75, 44, 75, 24, 70, 78, 74, 60, 59, 34, 27, 7, 23, 19, 95, 4, 35, 38, 22, 46, 1, 44, 20, 52, 1, 96, 57, 5, 76, 49, 1, 37, 35), 31, 
        false    
      )}")   
  
  }
  
source_py: def how_to_check_if_a_given_array_represents_a_binary_heap_1(arr, n):
      for i in range((int(((n - 2) / 2)) + 1)):
          if (arr[((2 * i) + 1)] > arr[i]):
              return False
          if ((((2 * i) + 2) < n) and (arr[((2 * i) + 2)] > arr[i])):
              return False
      return True
source_cpp: bool how_to_check_if_a_given_array_represents_a_binary_heap_1(vector<int> arr, int n) {
    for ( int i = 0;
    i <= ( n - 2 ) / 2;
    i ++ ) {
      if ( arr [ 2 * i + 1 ] > arr [ i ] ) return false;
      if ( 2 * i + 2 < n && arr [ 2 * i + 2 ] > arr [ i ] ) return false;
    }
    return true;
  }