title: Search An Element In An Array Where Difference Between Adjacent Elements Is 1
signature: def searchAnElementInAnArrayWhereDifferenceBetweenAdjacentElementsIs1(arr: List[Int], n: Int, x: 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, x: Int, expected: Int): String = {
      try {
          if (validateSolution(PLACEHOLDER_FN_NAME(arr, n, x),expected)) {
              "PASSED"
          } else{
              "FAILED"
          }
      }catch{
          case e: Exception => {e.getClass.getName}
      }
  
  }
  object QuestionEvaluator extends App {
  
      println(s"TEST-0...${driver(
        List(8, 7, 6, 7, 6, 5, 4, 3, 2, 3, 4, 3), 12, 3, 
        7    
      )}")   
  
  
      println(s"TEST-1...${driver(
        List(6, 90), 1, 1, 
        -1    
      )}")   
  
  
      println(s"TEST-2...${driver(
        List(1, 2, 3, 4, 5, 4), 6, 5, 
        4    
      )}")   
  
  
      println(s"TEST-3...${driver(
        List(97, 35, 60, 96, 3, 67, 72, 95, 55, 9, 69, 28, 15, 91, 31, 59), 15, 9, 
        -1    
      )}")   
  
  
      println(s"TEST-4...${driver(
        List(-84, -78, -74, -70, -68, -60, -56, -54, -48, -46, -28, -16, -6, 0, 0, 8, 8, 8, 12, 16, 26, 30, 32, 34, 36, 40, 46, 48, 70, 70, 72, 76, 78, 78, 80, 84, 84, 86), 22, 31, 
        -1    
      )}")   
  
  
      println(s"TEST-5...${driver(
        List(1, 0, 1, 1, 1, 1, 0, 1, 1, 1, 1), 5, 7, 
        -1    
      )}")   
  
  
      println(s"TEST-6...${driver(
        List(55, 64, 76, 79, 93, 96), 4, 4, 
        -1    
      )}")   
  
  
      println(s"TEST-7...${driver(
        List(66, -90, 98, -50, 0, 46, 42, 64, -96, -80, -96, 20, -10, -84), 8, 13, 
        -1    
      )}")   
  
  
      println(s"TEST-8...${driver(
        List(0, 0, 0, 0, 0, 0, 1), 6, 5, 
        -1    
      )}")   
  
  
      println(s"TEST-9...${driver(
        List(94, 4, 34, 87, 32, 3, 92, 68, 57, 76, 24, 33, 3, 4, 30, 70, 49, 30, 72, 82, 16, 53, 6, 24, 92, 96, 89, 28, 21, 8, 36, 9, 40, 85, 51, 1, 63, 68, 74, 26, 40, 3, 9, 32, 67, 4, 6, 73), 25, 25, 
        -1    
      )}")   
  
  }
  
source_py: def search_an_element_in_an_array_where_difference_between_adjacent_elements_is_1(arr, n, x):
      i = 0
      while (i < n):
          if (arr[i] == x):
              return i
          i = (i + abs((arr[i] - x)))
      print('number is not present!')
      return (- 1)
source_cpp: int search_an_element_in_an_array_where_difference_between_adjacent_elements_is_1(vector<int> arr, int n, int x) {
    int i = 0;
    while ( i < n ) {
      if ( arr [ i ] == x ) return i;
      i = i + abs ( arr [ i ] - x );
    }
    return - 1;
  }