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在Java中,有序链表通常是指一个已经按照特定顺序(如升序或降序)排列的链表。这种数据结构在插入、删除和查找操作时非常高效。以下是一个简单的有序链表实现示例:
- 首先,我们需要创建一个节点类(Node)来表示链表中的每个元素:
class Node { int data; Node next; public Node(int data) { this.data = data; this.next = null; } }
- 接下来,我们创建一个有序链表类(SortedLinkedList)并实现基本的操作方法,如插入、删除和查找:
class SortedLinkedList { Node head; public void insert(int data) { Node newNode = new Node(data); if (head == null || head.data >= data) { newNode.next = head; head = newNode; } else { Node current = head; while (current.next != null && current.next.data< data) { current = current.next; } newNode.next = current.next; current.next = newNode; } } public void delete(int data) { if (head == null) return; if (head.data == data) { head = head.next; return; } Node current = head; while (current.next != null && current.next.data != data) { current = current.next; } if (current.next != null) { current.next = current.next.next; } } public boolean search(int data) { Node current = head; while (current != null) { if (current.data == data) { return true; } if (current.data > data) { break; } current = current.next; } return false; } }
- 最后,我们可以创建一个主类(Main)来测试我们的有序链表实现:
public class Main { public static void main(String[] args) { SortedLinkedList list = new SortedLinkedList(); list.insert(5); list.insert(3); list.insert(7); list.insert(1); System.out.println("Searching for 3: " + list.search(3)); // 输出:Searching for 3: true System.out.println("Searching for 4: " + list.search(4)); // 输出:Searching for 4: false list.delete(3); System.out.println("Searching for 3 after deletion: " + list.search(3)); // 输出:Searching for 3 after deletion: false } }
这个简单的有序链表实现展示了如何在Java中创建和操作有序链表。在实际应用中,你可能需要根据具体需求对这个实现进行扩展和优化。