title: Count Factorial Numbers In A Given Range
signature: function countFactorialNumbersInAGivenRange(low: number, high: number): number {
source_py: def count_factorial_numbers_in_a_given_range(low, high):
      fact = 1
      x = 1
      while (fact < low):
          fact = (fact * x)
          x += 1
      res = 0
      while (fact <= high):
          res += 1
          fact = (fact * x)
          x += 1
      return res
source_cpp: int count_factorial_numbers_in_a_given_range(int low, int high) {
    int fact = 1, x = 1;
    while ( fact < low ) {
      fact = fact * x;
      x ++;
    }
    int res = 0;
    while ( fact <= high ) {
      res ++;
      fact = fact * x;
      x ++;
    }
    return res;
  }
question_info.test_list: [{"idx": 0, "outputs": 0, "inputs": {"low": 57, "high": 79}}, {"idx": 1, "outputs": 0, "inputs": {"low": 57, "high": 21}}, {"idx": 2, "outputs": 0, "inputs": {"low": 31, "high": 37}}, {"idx": 3, "outputs": 0, "inputs": {"low": 62, "high": 87}}, {"idx": 4, "outputs": 0, "inputs": {"low": 49, "high": 98}}, {"idx": 5, "outputs": 0, "inputs": {"low": 82, "high": 76}}, {"idx": 6, "outputs": 0, "inputs": {"low": 31, "high": 45}}, {"idx": 7, "outputs": 2, "inputs": {"low": 5, "high": 52}}, {"idx": 8, "outputs": 0, "inputs": {"low": 76, "high": 43}}, {"idx": 9, "outputs": 0, "inputs": {"low": 55, "high": 6}}]
question_info.entry_cls_name: Solution
question_info.test_code: 
  
  // SOLUTION CODE
  // ============================================
  PLACEHOLDER_CODE_BODY
  
  // TESTING CODE 
  // ============================================
  function convertToString(value: any): string{
      return JSON.stringify(value, function (key, val) {
          if (val instanceof Set) {
              return Array.from(val);
          } return val;});
  }
  
  function validateSolution(actual: number, expected: number): boolean {
      return convertToString(actual) === convertToString(expected);
  }
  
  function driver(low: number, high: number, expected:number): string {
      try{
          if (validateSolution(PLACEHOLDER_FN_NAME(low, high),expected)){
              return "PASSED";
          }
          return "FAILED";
      } catch (error) {
        return error.name;
      }
      
  }
      
  function main(){
    let result = '';
    result = driver(57, 79, 0);
    console.log(`TEST-0...${result}`);
  
    result = driver(57, 21, 0);
    console.log(`TEST-1...${result}`);
  
    result = driver(31, 37, 0);
    console.log(`TEST-2...${result}`);
  
    result = driver(62, 87, 0);
    console.log(`TEST-3...${result}`);
  
    result = driver(49, 98, 0);
    console.log(`TEST-4...${result}`);
  
    result = driver(82, 76, 0);
    console.log(`TEST-5...${result}`);
  
    result = driver(31, 45, 0);
    console.log(`TEST-6...${result}`);
  
    result = driver(5, 52, 2);
    console.log(`TEST-7...${result}`);
  
    result = driver(76, 43, 0);
    console.log(`TEST-8...${result}`);
  
    result = driver(55, 6, 0);
    console.log(`TEST-9...${result}`);
  
  };
  
  main();
question_info.extension: ts
question_info.entry_fn_name: countFactorialNumbersInAGivenRange
question_info.test_case_ids: 0 1 2 3 4 5 6 7 8 9
question_info.commands: tsc --target es2020 --lib es5,dom,es2015,es2020 __FILENAME__
question_info.commands: node __FILENAME__.js