如何使用节点在链表中显示字符串

Question

我创建了一个基本节点链表，以数字显示列表的大小(即:0 - 9)现在我试图改变我必须显示的名称列表。我对我需要改变的地方和将要改变的地方感到困惑。名称将采用字符串格式。最后，我将从一个txt文件中读取一个名字列表。现在我只使用3个名字和测试数据。

       import java.util.*;
  public class Node {
public int dataitems; 
public Node next; 
Node front;
public void initList(){
    front = null;
}
public Node makeNode(int number){
    Node newNode;
    newNode = new Node();
    newNode.dataitems = number;
    newNode.next = null;
    return newNode;
}
public boolean isListEmpty(Node front){
    boolean balance;
    if (front == null){
        balance = true;
    }
    else {
        balance = false;
    }
    return balance;
}
public Node findTail(Node front) {
    Node current;
    current = front;
    while(current.next != null){
        //System.out.print(current.dataitems);
        current = current.next;
    } //System.out.println(current.dataitems);
    return current;
}
public void addNode(Node front ,int number){
    Node tail;
    if(isListEmpty(front)){
        this.front = makeNode(number);
    } 
    else {
        tail = findTail(front);
        tail.next = makeNode(number);
    }
}
public void printNodes(int len){
    int j;
    for (j = 0; j < len; j++){
        addNode(front, j);
    }  showList(front);
}
public void showList(Node front){
    Node current;
    current = front;
    while ( current.next != null){
        System.out.print(current.dataitems + " ");
        current = current.next;
    }
    System.out.println(current.dataitems);
}

public static void main(String[] args) {
     String[] names = {"Billy Joe", "Sally Hill", "Mike Tolly"}; // Trying to print theses names..Possibly in alphabetical order
    Node x = new Node();
     Scanner in = new Scanner(System.in);
        System.out.println("What size list? Enter Number: ");
    int number = in.nextInt();
     x.printNodes(number);
    } 

}

Answer 1

我认为有几件事必须改变

 public void printNodes(String[] nameList){
    int j;
    for (j = 0; j < nameList.length; j++){
        addNode(front, nameList[j]);
    }  showList(front);
}

必须传递包含

名称的数组

x.printNodes(names);

也发生了变化:

public void addNode(Node front ,String name){
    Node tail;
    if(isListEmpty(front)){
        this.front = makeNode(name);
    } 
    else {
        tail = findTail(front);
        tail.next = makeNode(name);
    }
}

:

public Node makeNode(String name){
    Node newNode;
    newNode = new Node();
    newNode.dataitems = name;
    newNode.next = null;
    return newNode;
}

，不要忘记将dateitem的类型更改为string:

      import java.util.*;
  public class Node {
public String dataitems;