static boolean check ( String s ) {
  for ( int i = 0 ;
  i + 1 < s . length ( ) ;
  ++ i ) {
    if ( Math . abs ( s . charAt ( i ) - s . charAt ( i + 1 ) ) == 1 ) {
      return false ;
    }
  }
  return true ;
}

static boolean check ( String s ) { for ( int i = 0 ; i + 1 < s . length ( ) ; ++ i ) { if ( Math . abs ( s . charAt ( i ) - s . charAt ( i + 1 ) ) == 1 ) { return false ; } } return true ; }
(method_declaration (modifiers) type: (boolean_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (type_identifier) name: (identifier))) body: (block (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (binary_expression left: (binary_expression left: (identifier) right: (decimal_integer_literal)) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list))) update: (update_expression (identifier)) body: (block (if_statement condition: (parenthesized_expression (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (binary_expression left: (identifier) right: (decimal_integer_literal))))))) right: (decimal_integer_literal))) consequence: (block (return_statement (false)))))) (return_statement (true))))