java用顺序表实现通讯录设计

首先，我们需要定义通讯录的联系人实体类：

public class Contact {
    private String name;
    private String phoneNumber;
    private String email;

    public Contact(String name, String phoneNumber, String email) {
        this.name = name;
        this.phoneNumber = phoneNumber;
        this.email = email;
    }

    public String getName() {
        return name;
    }

    public String getPhoneNumber() {
        return phoneNumber;
    }

    public String getEmail() {
        return email;
    }

    @Override
    public String toString() {
        return "Name: " + name + ", Phone number: " + phoneNumber + ", Email: " + email;
    }
}

接下来，我们需要实现顺序表类：

public class ContactList {
    private Contact[] contacts;
    private int size;

    public ContactList(int capacity) {
        contacts = new Contact[capacity];
        size = 0;
    }

    public int getSize() {
        return size;
    }

    public void addContact(Contact contact) {
        if (size == contacts.length) {
            throw new RuntimeException("Contact list is full");
        }
        contacts[size++] = contact;
    }

    public Contact getContact(int index) {
        if (index < 0 || index >= size) {
            throw new RuntimeException("Invalid index");
        }
        return contacts[index];
    }

    public void removeContact(int index) {
        if (index < 0 || index >= size) {
            throw new RuntimeException("Invalid index");
        }
        for (int i = index; i < size - 1; i++) {
            contacts[i] = contacts[i + 1];
        }
        contacts[size - 1] = null;
        size--;
    }

    public void updateContact(int index, Contact contact) {
        if (index < 0 || index >= size) {
            throw new RuntimeException("Invalid index");
        }
        contacts[index] = contact;
    }

    public Contact[] getAllContacts() {
        Contact[] result = new Contact[size];
        for (int i = 0; i < size; i++) {
            result[i] = contacts[i];
        }
        return result;
    }
}

然后，我们可以在主函数中使用顺序表类来实现通讯录：

public static void main(String[] args) {
    ContactList contactList = new ContactList(10);
    contactList.addContact(new Contact("Alice", "1234567890", "alice@example.com"));
    contactList.addContact(new Contact("Bob", "2345678901", "bob@example.com"));
    contactList.addContact(new Contact("Charlie", "3456789012", "charlie@example.com"));
    contactList.removeContact(1);
    contactList.updateContact(0, new Contact("Alice", "0987654321", "alice@example.com"));
    Contact[] contacts = contactList.getAllContacts();
    for (Contact contact : contacts) {
        System.out.println(contact);
    }
}

输出结果：

Name: Alice, Phone number: 0987654321, Email: alice@example.com
Name: Charlie, Phone number: 3456789012, Email: charlie@example.com