title: Efficient Search In An Array Where Difference Between Adjacent Is 1
signature: efficientSearchInAnArrayWhereDifferenceBetweenAdjacentIs1 :: [Integer] -> Integer -> Integer -> Integer
  efficientSearchInAnArrayWhereDifferenceBetweenAdjacentIs1 arr n x = 
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 x expected = do
      if (validateSolution (PLACEHOLDER_FN_NAME arr n x) expected)
          then "PASSED"
      else "FAILED"
  
  main = do
      printf "TEST-0...%s\n" (driver ([5, 4, 5, 6, 5, 4, 3, 2]) (29) (6) (3) )
  
      printf "TEST-1...%s\n" (driver ([5, 4, 5, 6, 5, 4, 3, 2]) (19) (3) (6) )
  
      printf "TEST-2...%s\n" (driver ([0, 0, 0, 0, 0, 0, 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, 1, 1, 1, 1, 1, 1]) (37) (1) (14) )
  
      printf "TEST-3...%s\n" (driver ([50, 51, 52, 51, 50, 49, 48]) (17) (49) (5) )
  
      printf "TEST-4...%s\n" (driver ([-86, -68, -32, -6, 6, 10, 30, 34, 58, 92]) (6) (6) (-1) )
  
      printf "TEST-5...%s\n" (driver ([1, 1, 1, 0, 0, 1, 0, 0, 0, 1, 1, 1, 0, 1, 0, 0, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 0, 1, 0, 1, 1, 1, 0, 0]) (27) (22) (-1) )
  
      printf "TEST-6...%s\n" (driver ([58]) (0) (0) (-1) )
  
      printf "TEST-7...%s\n" (driver ([-64, 78, 58, 36, 48, 80, -80, 74, -98, 46, -48, 24, 80, 72, 90, -46, 14, 68, 38, 58, -54, 80, 44, -62, 34, -28, 92, 84, 90, 44, -26, 88, 18, 22, -32, 54, 58, 92]) (24) (34) (-1) )
  
      printf "TEST-8...%s\n" (driver ([0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 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]) (35) (1) (21) )
  
      printf "TEST-9...%s\n" (driver ([5]) (0) (0) (-1) )
  
source_py: def efficient_search_in_an_array_where_difference_between_adjacent_is_1(arr, n, x):
      i = 0
      while (i <= (n - 1)):
          if (arr[i] == x):
              return i
          i += abs((arr[i] - x))
      return (- 1)
source_cpp: int efficient_search_in_an_array_where_difference_between_adjacent_is_1(vector<int> arr, int n, int x) {
    int i = 0;
    while ( i <= n - 1 ) {
      if ( arr [ i ] == x ) return i;
      i += abs ( arr [ i ] - x );
    }
    return - 1;
  }