static void nondecdigits ( String s ) {
  int m = s . length ( ) ;
  int [ ] a = new int [ m + 1 ] ;
  for ( int i = 0 ;
  i < m ;
  i ++ ) a [ i ] = ( int ) s . charAt ( i ) - ( int ) '0' ;
  int level = m - 1 ;
  for ( int i = m - 1 ;
  i > 0 ;
  i -- ) {
    if ( a [ i ] < a [ i - 1 ] ) {
      a [ i - 1 ] -- ;
      level = i - 1 ;
    }
  }
  if ( a [ 0 ] != 0 ) {
    for ( int i = 0 ;
    i <= level ;
    i ++ ) System . out . print ( a [ i ] ) ;
    for ( int i = level + 1 ;
    i < m ;
    i ++ ) System . out . print ( "9" ) ;
  }
  else {
    for ( int i = 1 ;
    i < level ;
    i ++ ) System . out . print ( a [ i ] ) ;
    for ( int i = level + 1 ;
    i < m ;
    i ++ ) System . out . print ( "9" ) ;
  }
}

static void nondecdigits ( String s ) { int m = s . length ( ) ; int [ ] a = new int [ m + 1 ] ; for ( int i = 0 ; i < m ; i ++ ) a [ i ] = ( int ) s . charAt ( i ) - ( int ) '0' ; int level = m - 1 ; for ( int i = m - 1 ; i > 0 ; i -- ) { if ( a [ i ] < a [ i - 1 ] ) { a [ i - 1 ] -- ; level = i - 1 ; } } if ( a [ 0 ] != 0 ) { for ( int i = 0 ; i <= level ; i ++ ) System . out . print ( a [ i ] ) ; for ( int i = level + 1 ; i < m ; i ++ ) System . out . print ( "9" ) ; } else { for ( int i = 1 ; i < level ; i ++ ) System . out . print ( a [ i ] ) ; for ( int i = level + 1 ; i < m ; i ++ ) System . out . print ( "9" ) ; } }
(method_declaration (modifiers) type: (void_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (type_identifier) name: (identifier))) body: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (local_variable_declaration type: (array_type element: (integral_type) dimensions: (dimensions)) declarator: (variable_declarator name: (identifier) value: (array_creation_expression type: (integral_type) dimensions: (dimensions_expr (binary_expression left: (identifier) right: (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: (array_access array: (identifier) index: (identifier)) right: (binary_expression left: (cast_expression type: (integral_type) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier)))) right: (cast_expression type: (integral_type) value: (character_literal)))))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (binary_expression left: (identifier) right: (decimal_integer_literal)))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (binary_expression left: (identifier) right: (decimal_integer_literal)))) condition: (binary_expression left: (identifier) right: (decimal_integer_literal)) update: (update_expression (identifier)) body: (block (if_statement condition: (parenthesized_expression (binary_expression left: (array_access array: (identifier) index: (identifier)) right: (array_access array: (identifier) index: (binary_expression left: (identifier) right: (decimal_integer_literal))))) consequence: (block (expression_statement (update_expression (array_access array: (identifier) index: (binary_expression left: (identifier) right: (decimal_integer_literal))))) (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (identifier) right: (decimal_integer_literal)))))))) (if_statement condition: (parenthesized_expression (binary_expression left: (array_access array: (identifier) index: (decimal_integer_literal)) right: (decimal_integer_literal))) consequence: (block (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: (field_access object: (identifier) field: (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: (binary_expression left: (identifier) right: (decimal_integer_literal)))) condition: (binary_expression left: (identifier) right: (identifier)) update: (update_expression (identifier)) body: (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (string_literal)))))) alternative: (block (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: (field_access object: (identifier) field: (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: (binary_expression left: (identifier) right: (decimal_integer_literal)))) condition: (binary_expression left: (identifier) right: (identifier)) update: (update_expression (identifier)) body: (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (string_literal)))))))))