static int calculate_result ( int n ) {
  int result = 2 * nCr ( ( n - 2 ) , ( n / 2 - 1 ) ) ;
  return result ;
}

static int calculate_result ( int n ) { int result = 2 * nCr ( ( n - 2 ) , ( n / 2 - 1 ) ) ; return result ; }
(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) value: (binary_expression left: (decimal_integer_literal) right: (method_invocation name: (identifier) arguments: (argument_list (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))) (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (decimal_integer_literal)) right: (decimal_integer_literal)))))))) (return_statement (identifier))))