static int power ( int n , int m ) {
  if ( m == 0 ) return 1 ;
  if ( m % 2 == 1 ) return power ( n , m - 1 ) * n ;
  int e = power ( n , m / 2 ) ;
  return e * e ;
}

static int power ( int n , int m ) { if ( m == 0 ) return 1 ; if ( m % 2 == 1 ) return power ( n , m - 1 ) * n ; int e = power ( n , m / 2 ) ; return e * e ; }
(method_declaration (modifiers) type: (integral_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (integral_type) name: (identifier)) (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: (binary_expression left: (identifier) right: (decimal_integer_literal)) right: (decimal_integer_literal))) consequence: (return_statement (binary_expression left: (method_invocation name: (identifier) arguments: (argument_list (identifier) (binary_expression left: (identifier) right: (decimal_integer_literal)))) right: (identifier)))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation name: (identifier) arguments: (argument_list (identifier) (binary_expression left: (identifier) right: (decimal_integer_literal)))))) (return_statement (binary_expression left: (identifier) right: (identifier)))))