title: Find Last Digit Factorial Divides Factorial B
signature: function find_last_digit_factorial_divides_factorial_b(a, b)
test_code: 
  
  -- SOLUTION CODE
  -- ============================================
  PLACEHOLDER_CODE_BODY
  
  -- TESTING CODE 
  -- ============================================
  function isCorrect(actual, expected)
      if type(expected) ~= type(actual) then
          return false
      end
      
      if type(expected) == 'table' then
          for k,v_expected in pairs(expected) do
              
              if actual[k] == nil then
                  return false
              end
              local v_actual = actual[k]
              if not isCorrect(v_actual, v_expected) then
                  return false
              end
              actual[k]=nil
          end
      
          if next(actual) then 
              return false
          end
          return true
      else
          return actual == expected
      end
  end
  
  function validateSolution(actual, expected)
      return isCorrect(actual,expected)
  end
  
  function driver(a, b, expected)
      local exec_result;
      local status, error_msg = pcall(function () 
          exec_result=PLACEHOLDER_FN_NAME(a, b) 
      end)
      if status then
          if validateSolution(exec_result,expected) then
              return "PASSED"
          end
          return "FAILED"
      else
          return string.format("ERROR=%s",string.gsub(error_msg,".*:[%d]+: ",""))
      end
  end
      
  function main()
      result = driver(79, 84, 0)
      print(string.format("TEST-0...%s",result))
  
      result = driver(61, 29, 1)
      print(string.format("TEST-1...%s",result))
  
      result = driver(39, 77, 0)
      print(string.format("TEST-2...%s",result))
  
      result = driver(39, 65, 0)
      print(string.format("TEST-3...%s",result))
  
      result = driver(61, 78, 0)
      print(string.format("TEST-4...%s",result))
  
      result = driver(86, 73, 1)
      print(string.format("TEST-5...%s",result))
  
      result = driver(7, 92, 0)
      print(string.format("TEST-6...%s",result))
  
      result = driver(86, 50, 1)
      print(string.format("TEST-7...%s",result))
  
      result = driver(86, 63, 1)
      print(string.format("TEST-8...%s",result))
  
      result = driver(11, 2, 1)
      print(string.format("TEST-9...%s",result))
  
  end
  
  main()
source_py: def find_last_digit_factorial_divides_factorial_b(A, B):
      variable = 1
      if (A == B):
          return 1
      elif ((B - A) >= 5):
          return 0
      else:
          for i in range((A + 1), (B + 1)):
              variable = ((variable * (i % 10)) % 10)
          return (variable % 10)
source_cpp: int find_last_digit_factorial_divides_factorial_b(long long int A, long long int B) {
    int variable = 1;
    if ( A == B ) return 1;
    else if ( ( B - A ) >= 5 ) return 0;
    else {
      for ( long long int i = A + 1;
      i <= B;
      i ++ ) variable = ( variable * ( i % 10 ) ) % 10;
      return variable % 10;
    }
  }