static void printRepeatingEven ( int arr [ ] , int n ) {
  long _xor = 0L ;
  long pos ;
  for ( int i = 0 ;
  i < n ;
  ++ i ) {
    pos = 1 << arr [ i ] ;
    _xor ^= pos ;
  }
  for ( int i = 0 ;
  i < n ;
  ++ i ) {
    pos = 1 << arr [ i ] ;
    if ( ! ( ( pos & _xor ) != 0 ) ) {
      System . out . print ( arr [ i ] + " " ) ;
      _xor ^= pos ;
    }
  }
}

static void printRepeatingEven ( int arr [ ] , int n ) { long _xor = 0L ; long pos ; for ( int i = 0 ; i < n ; ++ i ) { pos = 1 << arr [ i ] ; _xor ^= pos ; } for ( int i = 0 ; i < n ; ++ i ) { pos = 1 << arr [ i ] ; if ( ! ( ( pos & _xor ) != 0 ) ) { System . out . print ( arr [ i ] + " ▁ " ) ; _xor ^= pos ; } } }
(method_declaration (modifiers) type: (void_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: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (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 (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (decimal_integer_literal) right: (array_access array: (identifier) index: (identifier))))) (expression_statement (assignment_expression left: (identifier) right: (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 (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (decimal_integer_literal) right: (array_access array: (identifier) index: (identifier))))) (if_statement condition: (parenthesized_expression (unary_expression operand: (parenthesized_expression (binary_expression left: (parenthesized_expression (binary_expression left: (identifier) right: (identifier))) right: (decimal_integer_literal))))) consequence: (block (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (binary_expression left: (array_access array: (identifier) index: (identifier)) right: (string_literal))))) (expression_statement (assignment_expression left: (identifier) right: (identifier)))))))))