title: Count Trailing Zeroes Factorial Number
signature: function countTrailingZeroesFactorialNumber(n: number): number {
source_py: def count_trailing_zeroes_factorial_number(n):
      count = 0
      i = 5
      while ((n / i) >= 1):
          count += int((n / i))
          i *= 5
      return int(count)
source_cpp: int count_trailing_zeroes_factorial_number(int n) {
    int count = 0;
    for ( int i = 5;
    n / i >= 1;
    i *= 5 ) count += n / i;
    return count;
  }
question_info.test_list: [{"idx": 0, "outputs": 1, "inputs": {"n": 9}}, {"idx": 1, "outputs": 9, "inputs": {"n": 43}}, {"idx": 2, "outputs": 12, "inputs": {"n": 50}}, {"idx": 3, "outputs": 7, "inputs": {"n": 32}}, {"idx": 4, "outputs": 8, "inputs": {"n": 37}}, {"idx": 5, "outputs": 12, "inputs": {"n": 51}}, {"idx": 6, "outputs": 7, "inputs": {"n": 33}}, {"idx": 7, "outputs": 10, "inputs": {"n": 49}}, {"idx": 8, "outputs": 0, "inputs": {"n": 1}}, {"idx": 9, "outputs": 18, "inputs": {"n": 75}}]
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(n: number, expected:number): string {
      try{
          if (validateSolution(PLACEHOLDER_FN_NAME(n),expected)){
              return "PASSED";
          }
          return "FAILED";
      } catch (error) {
        return error.name;
      }
      
  }
      
  function main(){
    let result = '';
    result = driver(9, 1);
    console.log(`TEST-0...${result}`);
  
    result = driver(43, 9);
    console.log(`TEST-1...${result}`);
  
    result = driver(50, 12);
    console.log(`TEST-2...${result}`);
  
    result = driver(32, 7);
    console.log(`TEST-3...${result}`);
  
    result = driver(37, 8);
    console.log(`TEST-4...${result}`);
  
    result = driver(51, 12);
    console.log(`TEST-5...${result}`);
  
    result = driver(33, 7);
    console.log(`TEST-6...${result}`);
  
    result = driver(49, 10);
    console.log(`TEST-7...${result}`);
  
    result = driver(1, 0);
    console.log(`TEST-8...${result}`);
  
    result = driver(75, 18);
    console.log(`TEST-9...${result}`);
  
  };
  
  main();
question_info.extension: ts
question_info.entry_fn_name: countTrailingZeroesFactorialNumber
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