1. The following code snippet shows a printing function for a sparse matrix implemented with a linked-list. Circle the option that best describes the efficiency of such a function:void PrintMatrix_Slow(Node *listpointer, int size) {//added size to help for (int i = 0; i < size; i++) { for (int j = 0; j < size; j++) { printf("%d ", Search(listpointer, i, j)); } printf("\n"); } printf("\n"); }a) This is inefficient because the linked-list can be accessed randomly. b) This is the most efficient way to write a printing function because the linked-list has to be traversed from the head for every new Search(O call. c) This is inefficient because the linked-list has to be traversed from the head for every new Search() call. d) This is the most efficient way to write a printing function, as linked-list can be accessed randomly.请帮我选出答案

答案是c) This is inefficient because the linked-list has to be traversed from the head for every new Search() call. 在该函数中，对于每个元素，都需要从链表头部开始搜索，这样会导致时间复杂度增加。应该考虑使用其他数据结构或优化搜索算法来提高效率。

相关问题

John is working in Software Company as a developer, he has developed a web application following client-server architecture and he wants to implement Spring REST API on client application for getting the list of the studentsl from the database. Which of the following code snippet he will use to get the desired result?@Overridepublic List<Student> getStudent() {ResponseEntity<List<Student>> responseEntity =restTemplate.exchange(studentRestUrl, HttpMethod.GET,new ParameterizedTypeReference<List<Student>>() {});AList<Student> students = responseEntity.getBody();} return students;

The code snippet that John will use to get the list of students from the database using Spring REST API on the client application would be:

@Override
public List<Student> getStudent() {
    ResponseEntity<List<Student>> responseEntity = restTemplate.exchange(
        studentRestUrl, 
        HttpMethod.GET,
        null,
        new ParameterizedTypeReference<List<Student>>() {}
    );
    List<Student> students = responseEntity.getBody();
    return students;
}

In this code, John is using the Spring RestTemplate to send an HTTP GET request to the server-side REST API endpoint at the `studentRestUrl`. The `exchange()` method is used to send the request and receive the response, with the HTTP method type as `GET` and the `ParameterizedTypeReference` specifying the expected response type as a list of `Student` objects. The response is then extracted using the `getBody()` method of the `ResponseEntity` object and returned as a list of `Student` objects.

You are creating a Web application for the book shop by using Spring MVC. When a user sends a request for theURL, /SearchBook.htm page in this Web application, the request needs to be handled by theSearchBookController class defined in the controller package of the Web application. For this, you used thefollowing code snippet:<beans> <bean id="ControllerHandlerMapping" class=org.springframework.web.servlet.mvcsupport,SimpleUrlHandlerMapping"/><bean class="controller SearchBookController"></beans> However, the preceding code snippet does not forward the request to the SearchBookController class. Analyze theproblem and provide the correct code snippet.

The code snippet provided in the question is incorrect because the `SimpleUrlHandlerMapping` bean is not properly configured to handle the URL mapping for the `SearchBookController`. To correctly map the URL `/SearchBook.htm` to the `SearchBookController`, you should use the following code snippet:

<beans>
    <bean id="handlerMapping" class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
        <property name="mappings">
            <props>
                <prop key="/SearchBook.htm">searchBookController</prop>
            </props>
        </property>
    </bean>
    
    <bean id="searchBookController" class="controller.SearchBookController"/>
</beans>

In this code snippet, we are using the `SimpleUrlHandlerMapping` bean to map the URL `/SearchBook.htm` to the `searchBookController` bean, which is an instance of the `SearchBookController` class. The `handlerMapping` bean is configured with a `mappings` property that contains a `props` element with a single URL mapping for `/SearchBook.htm`. The `searchBookController` bean is defined as an instance of the `SearchBookController` class and is mapped to the `searchBookController` bean ID. This configuration ensures that requests to the `/SearchBook.htm` URL are handled by the `SearchBookController` class.