static int ways ( int n ) {
  if ( n == 1 ) {
    return 1 ;
  }
  if ( n == 2 ) {
    return 2 ;
  }
  else {
    return ways ( n - 1 ) + ways ( n - 2 ) ;
  }
}

static int ways ( int n ) { if ( n == 1 ) { return 1 ; } if ( n == 2 ) { return 2 ; } else { return ways ( n - 1 ) + ways ( n - 2 ) ; } }
(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: (block (return_statement (decimal_integer_literal)))) (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))) consequence: (block (return_statement (decimal_integer_literal))) alternative: (block (return_statement (binary_expression left: (method_invocation name: (identifier) arguments: (argument_list (binary_expression left: (identifier) right: (decimal_integer_literal)))) right: (method_invocation name: (identifier) arguments: (argument_list (binary_expression left: (identifier) right: (decimal_integer_literal))))))))))