static String smallestPoss ( String s , int n ) {
  String ans = "" ;
  int arr [ ] = new int [ 10 ] ;
  for ( int i = 0 ;
  i < n ;
  i ++ ) {
    arr [ s . charAt ( i ) - 48 ] ++ ;
  }
  for ( int i = 0 ;
  i < 10 ;
  i ++ ) {
    for ( int j = 0 ;
    j < arr [ i ] ;
    j ++ ) ans = ans + String . valueOf ( i ) ;
  }
  return ans ;
}

static String smallestPoss ( String s , int n ) { String ans = " " ; int arr [ ] = new int [ 10 ] ; for ( int i = 0 ; i < n ; i ++ ) { arr [ s . charAt ( i ) - 48 ] ++ ; } for ( int i = 0 ; i < 10 ; i ++ ) { for ( int j = 0 ; j < arr [ i ] ; j ++ ) ans = ans + String . valueOf ( i ) ; } return ans ; }
(method_declaration (modifiers) type: (type_identifier) 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: (type_identifier) declarator: (variable_declarator name: (identifier) value: (string_literal))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) dimensions: (dimensions) value: (array_creation_expression type: (integral_type) dimensions: (dimensions_expr (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 (expression_statement (update_expression (array_access array: (identifier) index: (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (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: (decimal_integer_literal)) update: (update_expression (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: (identifier) right: (array_access array: (identifier) index: (identifier))) update: (update_expression (identifier)) body: (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (identifier) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))))))))) (return_statement (identifier))))