Java單鍊錶的實作程式碼

下面是小編給大家分享的一個使用java寫單鍊錶，有問題歡迎給我留言哦。

先定義一個Node類

public class Node {
protected Node next; //指针域
public int data;//数据域
 
public Node( int data) {
this. data = data;
}
//显示此节点
public void display() {
System. out.print( data + " ");
}
}

   

接下來定義單鍊錶，並實現相關方法：

public class LinkList {
public Node first; // 定义一个头结点
private int pos = 0;// 节点的位置
public LinkList() {
this.first = null;
}
// 插入一个头节点
public void addFirstNode(int data) {
Node node = new Node(data);
node.next = first;
first = node;
}
// 删除一个头结点,并返回头结点
public Node deleteFirstNode() {
Node tempNode = first;
first = tempNode.next;
return tempNode;
}
// 在任意位置插入节点 在index的后面插入
public void add(int index, int data) {
Node node = new Node(data);
Node current = first;
Node previous = first;
while (pos != index) {
previous = current;
current = current.next;
pos++;
}
node.next = current;
previous.next = node;
pos = 0;
}
// 删除任意位置的节点
public Node deleteByPos(int index) {
Node current = first;
Node previous = first;
while (pos != index) {
pos++;
previous = current;
current = current.next;
}
if (current == first) {
first = first.next;
} else {
pos = 0;
previous.next = current.next;
}
return current;
}
// 根据节点的data删除节点(仅仅删除第一个)
public Node deleteByData(int data) {
Node current = first;
Node previous = first; // 记住上一个节点
while (current.data != data) {
if (current.next == null) {
return null;
}
previous = current;
current = current.next;
}
if (current == first) {
first = first.next;
} else {
previous.next = current.next;
}
return current;
}
// 显示出所有的节点信息
public void displayAllNodes() {
Node current = first;
while (current != null) {
current.display();
current = current.next;
}
System.out.println();
}
// 根据位置查找节点信息
public Node findByPos(int index) {
Node current = first;
if (pos != index) {
current = current.next;
pos++;
}
return current;
}
// 根据数据查找节点信息
public Node findByData(int data) {
Node current = first;
while (current.data != data) {
if (current.next == null)
return null;
current = current.next;
}
return current;
}
}

 

至此，對單鍊錶的操作就筆記到這裡了。

以上所述是小編給大家介紹的Java單鍊錶的實作程式碼，希望對大家有幫助，如果大家有任何疑問請給我留言，小編會及時回覆大家的。在此也非常感謝大家對PHP中文網的支持！

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