static int findDigits ( int n ) {
  if ( n < 0 ) return 0 ;
  if ( n <= 1 ) return 1 ;
  double digits = 0 ;
  for ( int i = 2 ;
  i <= n ;
  i ++ ) digits += Math . log10 ( i ) ;
  return ( int ) ( Math . floor ( digits ) ) + 1 ;
}

static int findDigits ( int n ) { if ( n < 0 ) return 0 ; if ( n <= 1 ) return 1 ; double digits = 0 ; for ( int i = 2 ; i <= n ; i ++ ) digits += Math . log10 ( i ) ; return ( int ) ( Math . floor ( digits ) ) + 1 ; }
(method_declaration (modifiers) type: (integral_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (integral_type) name: (identifier))) body: (block (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))) consequence: (return_statement (decimal_integer_literal))) (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))) consequence: (return_statement (decimal_integer_literal))) (local_variable_declaration type: (floating_point_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (binary_expression left: (identifier) right: (identifier)) update: (update_expression (identifier)) body: (expression_statement (assignment_expression left: (identifier) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier)))))) (return_statement (binary_expression left: (cast_expression type: (integral_type) value: (parenthesized_expression (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))))) right: (decimal_integer_literal)))))