static int summation ( int n ) {
  int sum ;
  sum = ( int ) ( Math . pow ( 10 , n + 1 ) - 10 - ( 9 * n ) ) / 81 ;
  return sum ;
}

static int summation ( int n ) { int sum ; sum = ( int ) ( Math . pow ( 10 , n + 1 ) - 10 - ( 9 * n ) ) / 81 ; return sum ; }
(method_declaration (modifiers) type: (integral_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (integral_type) name: (identifier))) body: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier))) (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (cast_expression type: (integral_type) value: (parenthesized_expression (binary_expression left: (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (decimal_integer_literal) (binary_expression left: (identifier) right: (decimal_integer_literal)))) right: (decimal_integer_literal)) right: (parenthesized_expression (binary_expression left: (decimal_integer_literal) right: (identifier)))))) right: (decimal_integer_literal)))) (return_statement (identifier))))