static int recamanArray ( int arr [ ] , int n ) {
  Set < Integer > s = new HashSet < Integer > ( ) ;
  int recaman [ ] = new int [ n + 1 ] ;
  recamanGenerator ( recaman , n ) ;
  for ( int i = 0 ;
  i < n ;
  i ++ ) s . add ( recaman [ i ] ) ;
  for ( int i = 0 ;
  i < n ;
  i ++ ) {
    if ( s . contains ( arr [ i ] ) ) s . remove ( arr [ i ] ) ;
  }
  return s . size ( ) ;
}

static int recamanArray ( int arr [ ] , int n ) { Set < Integer > s = new HashSet < Integer > ( ) ; int recaman [ ] = new int [ n + 1 ] ; recamanGenerator ( recaman , n ) ; for ( int i = 0 ; i < n ; i ++ ) s . add ( recaman [ i ] ) ; for ( int i = 0 ; i < n ; i ++ ) { if ( s . contains ( arr [ i ] ) ) s . remove ( arr [ i ] ) ; } return s . size ( ) ; }
(method_declaration (modifiers) type: (integral_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (integral_type) name: (identifier) dimensions: (dimensions)) (formal_parameter type: (integral_type) name: (identifier))) body: (block (local_variable_declaration type: (generic_type (type_identifier) (type_arguments (type_identifier))) declarator: (variable_declarator name: (identifier) value: (object_creation_expression type: (generic_type (type_identifier) (type_arguments (type_identifier))) arguments: (argument_list)))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) dimensions: (dimensions) value: (array_creation_expression type: (integral_type) dimensions: (dimensions_expr (binary_expression left: (identifier) right: (decimal_integer_literal)))))) (expression_statement (method_invocation name: (identifier) arguments: (argument_list (identifier) (identifier)))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (binary_expression left: (identifier) right: (identifier)) update: (update_expression (identifier)) body: (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (array_access array: (identifier) index: (identifier)))))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (binary_expression left: (identifier) right: (identifier)) update: (update_expression (identifier)) body: (block (if_statement condition: (parenthesized_expression (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (array_access array: (identifier) index: (identifier))))) consequence: (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (array_access array: (identifier) index: (identifier)))))))) (return_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))))