title: Count Fibonacci Numbers Given Range Log Time
signature: function countFibonacciNumbersGivenRangeLogTime($low, $high) {
test_code: <?php
  
  
  // SOLUTION CODE 
  // ============================================
  PLACEHOLDER_CODE_BODY
  
  // TESTING CODE 
  // ============================================
  function validateSolution($actual, $expected){
      return serialize($actual) == serialize($expected);
  }
  
  function driver($low, $high, $expected){
      try{
        if (validateSolution(PLACEHOLDER_FN_NAME($low, $high), $expected)){
          return "PASSED";
        }
        return "FAILED";
      }
      catch (Exception $exception_obj) {
        return get_class($exception_obj);
      }
  }
  
  function main(){
      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));
      
  }
  
  main();
  ?>
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;
  }