static boolean allDigits ( String str , int len ) {
  boolean [ ] present = new boolean [ MAX ] ;
  for ( int i = 0 ;
  i < len ;
  i ++ ) {
    if ( isDigit ( str . charAt ( i ) ) ) {
      int digit = str . charAt ( i ) - '0' ;
      present [ digit ] = true ;
    }
  }
  for ( int i = 0 ;
  i < MAX ;
  i ++ ) {
    if ( ! present [ i ] ) return false ;
  }
  return true ;
}

static boolean allDigits ( String str , int len ) { boolean [ ] present = new boolean [ MAX ] ; for ( int i = 0 ; i < len ; i ++ ) { if ( isDigit ( str . charAt ( i ) ) ) { int digit = str . charAt ( i ) - '0' ; present [ digit ] = true ; } } for ( int i = 0 ; i < MAX ; i ++ ) { if ( ! present [ i ] ) return false ; } return true ; }
(method_declaration (modifiers) type: (boolean_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (type_identifier) name: (identifier)) (formal_parameter type: (integral_type) name: (identifier))) body: (block (local_variable_declaration type: (array_type element: (boolean_type) dimensions: (dimensions)) declarator: (variable_declarator name: (identifier) value: (array_creation_expression type: (boolean_type) dimensions: (dimensions_expr (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 name: (identifier) arguments: (argument_list (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier)))))) consequence: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))) right: (character_literal)))) (expression_statement (assignment_expression left: (array_access array: (identifier) index: (identifier)) right: (true))))))) (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 (unary_expression operand: (array_access array: (identifier) index: (identifier)))) consequence: (return_statement (false))))) (return_statement (true))))