static void findUniquePair ( int [ ] arr , int n ) {
  int XOR = arr [ 0 ] ;
  for ( int i = 1 ;
  i < n ;
  i ++ ) XOR = XOR ^ arr [ i ] ;
  int set_bit_no = XOR & ~ ( XOR - 1 ) ;
  int x = 0 , y = 0 ;
  for ( int i = 0 ;
  i < n ;
  i ++ ) {
    if ( ( arr [ i ] & set_bit_no ) > 0 ) x = x ^ arr [ i ] ;
    else y = y ^ arr [ i ] ;
  }
  System . out . println ( "The unique pair is (" + x + "," + y + ")" ) ;
}

static void findUniquePair ( int [ ] arr , int n ) { int XOR = arr [ 0 ] ; for ( int i = 1 ; i < n ; i ++ ) XOR = XOR ^ arr [ i ] ; int set_bit_no = XOR & ~ ( XOR - 1 ) ; int x = 0 , y = 0 ; for ( int i = 0 ; i < n ; i ++ ) { if ( ( arr [ i ] & set_bit_no ) > 0 ) x = x ^ arr [ i ] ; else y = y ^ arr [ i ] ; } System . out . println ( " The ▁ unique ▁ pair ▁ is ▁ ( " + x + " , " + y + " ) " ) ; }
(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: (array_access array: (identifier) index: (decimal_integer_literal)))) (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 (assignment_expression left: (identifier) right: (binary_expression left: (identifier) right: (array_access array: (identifier) index: (identifier)))))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (binary_expression left: (identifier) right: (unary_expression operand: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))))))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal)) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) (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 (binary_expression left: (parenthesized_expression (binary_expression left: (array_access array: (identifier) index: (identifier)) right: (identifier))) right: (decimal_integer_literal))) consequence: (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (identifier) right: (array_access array: (identifier) index: (identifier))))) alternative: (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (identifier) right: (array_access array: (identifier) index: (identifier)))))))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (binary_expression left: (binary_expression left: (binary_expression left: (binary_expression left: (string_literal) right: (identifier)) right: (string_literal)) right: (identifier)) right: (string_literal)))))))