static boolean isDivisibleRec ( int x , int a , int b , int n ) {
  if ( x > n ) return false ;
  if ( n % x == 0 ) return true ;
  return ( isDivisibleRec ( x * 10 + a , a , b , n ) || isDivisibleRec ( x * 10 + b , a , b , n ) ) ;
}

static boolean isDivisibleRec ( int x , int a , int b , int n ) { if ( x > n ) return false ; if ( n % x == 0 ) return true ; return ( isDivisibleRec ( x * 10 + a , a , b , n ) || isDivisibleRec ( x * 10 + b , a , b , n ) ) ; }
(method_declaration (modifiers) type: (boolean_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (integral_type) name: (identifier)) (formal_parameter type: (integral_type) name: (identifier)) (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: (identifier))) consequence: (return_statement (false))) (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (identifier)) right: (decimal_integer_literal))) consequence: (return_statement (true))) (return_statement (parenthesized_expression (binary_expression left: (method_invocation name: (identifier) arguments: (argument_list (binary_expression left: (binary_expression left: (identifier) right: (decimal_integer_literal)) right: (identifier)) (identifier) (identifier) (identifier))) right: (method_invocation name: (identifier) arguments: (argument_list (binary_expression left: (binary_expression left: (identifier) right: (decimal_integer_literal)) right: (identifier)) (identifier) (identifier) (identifier))))))))