title: Count Fibonacci Numbers Given Range Log Time
signature: countFibonacciNumbersGivenRangeLogTime :: Integer -> Integer -> Integer
  countFibonacciNumbersGivenRangeLogTime low high = 
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 -> String
  driver low high expected = do
      if (validateSolution (PLACEHOLDER_FN_NAME low high) expected)
          then "PASSED"
      else "FAILED"
  
  main = do
      printf "TEST-0...%s\n" (driver (76) (43) (0) )
  
      printf "TEST-1...%s\n" (driver (96) (52) (0) )
  
      printf "TEST-2...%s\n" (driver (19) (79) (3) )
  
      printf "TEST-3...%s\n" (driver (36) (2) (0) )
  
      printf "TEST-4...%s\n" (driver (60) (11) (0) )
  
      printf "TEST-5...%s\n" (driver (20) (15) (0) )
  
      printf "TEST-6...%s\n" (driver (76) (4) (0) )
  
      printf "TEST-7...%s\n" (driver (63) (93) (1) )
  
      printf "TEST-8...%s\n" (driver (2) (25) (6) )
  
      printf "TEST-9...%s\n" (driver (41) (39) (0) )
  
source_py: def count_fibonacci_numbers_given_range_log_time(low, high):
      (f1, f2, f3) = (0, 1, 1)
      result = 0
      while (f1 <= high):
          if (f1 >= low):
              result += 1
          f1 = f2
          f2 = f3
          f3 = (f1 + f2)
      return result
source_cpp: int count_fibonacci_numbers_given_range_log_time(int low, int high) {
    int f1 = 0, f2 = 1, f3 = 1;
    int result = 0;
    while ( f1 <= high ) {
      if ( f1 >= low ) result ++;
      f1 = f2;
      f2 = f3;
      f3 = f1 + f2;
    }
    return result;
  }