title: Divisibility 9 Using Bitwise Operators
signature: function divisibility_9_using_bitwise_operators(n)
test_code: using Printf
  
  # SOLUTION CODE
  # ============================================
  PLACEHOLDER_CODE_BODY
  
  # TESTING CODE 
  # ============================================
  function validate_solution(actual, expected)
      return actual == expected
  end
  
  function driver(n, expected)
      try
  
          if validate_solution(PLACEHOLDER_FN_NAME(n), expected)
              return "PASSED";
          end
          return "FAILED";
      catch exception_obj
          return string(Base.typename(typeof(exception_obj)).wrapper);
      end
  end
  
  function main()
      
      result = driver(96, false);
      @printf("TEST-0...%s\n",result);
      
      result = driver(85, false);
      @printf("TEST-1...%s\n",result);
      
      result = driver(54, true);
      @printf("TEST-2...%s\n",result);
      
      result = driver(14, false);
      @printf("TEST-3...%s\n",result);
      
      result = driver(47, false);
      @printf("TEST-4...%s\n",result);
      
      result = driver(11, false);
      @printf("TEST-5...%s\n",result);
      
      result = driver(49, false);
      @printf("TEST-6...%s\n",result);
      
      result = driver(99, true);
      @printf("TEST-7...%s\n",result);
      
      result = driver(28, false);
      @printf("TEST-8...%s\n",result);
      
      result = driver(82, false);
      @printf("TEST-9...%s\n",result);
      
  end
  
  main()
source_py: def divisibility_9_using_bitwise_operators(n):
      if ((n == 0) or (n == 9)):
          return True
      if (n < 9):
          return False
      return divisibility_9_using_bitwise_operators((int((n >> 3)) - int((n & 7))))
source_cpp: bool divisibility_9_using_bitwise_operators(int n) {
    if ( n == 0 || n == 9 ) return true;
    if ( n < 9 ) return false;
    return divisibility_9_using_bitwise_operators ( ( int ) ( n >> 3 ) - ( int ) ( n & 7 ) );
  }