static void printAllKLength ( char [ ] set , int k ) {
  int n = set . length ;
  printAllKLengthRec ( set , "" , n , k ) ;
}

static void printAllKLength ( char [ ] set , int k ) { int n = set . length ; printAllKLengthRec ( set , " " , n , k ) ; }
(method_declaration (modifiers) type: (void_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (array_type element: (integral_type) dimensions: (dimensions)) name: (identifier)) (formal_parameter type: (integral_type) name: (identifier))) body: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (field_access object: (identifier) field: (identifier)))) (expression_statement (method_invocation name: (identifier) arguments: (argument_list (identifier) (string_literal) (identifier) (identifier))))))