static String GetIndividulaDigitSum ( String str , int len ) {
  int sum = 0 ;
  for ( int i = 0 ;
  i < len ;
  i ++ ) {
    sum = sum + str . charAt ( i ) - '0' ;
  }
  return convertToString ( sum ) ;
}

static String GetIndividulaDigitSum ( String str , int len ) { int sum = 0 ; for ( int i = 0 ; i < len ; i ++ ) { sum = sum + str . charAt ( i ) - '0' ; } return convertToString ( sum ) ; }
(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: (integral_type) 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 (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (binary_expression left: (identifier) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier)))) right: (character_literal)))))) (return_statement (method_invocation name: (identifier) arguments: (argument_list (identifier))))))