《程序员代码面试指南》第二章 链表问题 在单链表中删除指定值的节点

样例

1 2 3 4 5 6 7 8 9 10 ，num=3 ,结果：1 2 4 5 6 7 8 9 10

java代码

/**
 * @Description:在单链表中删除指定值的节点
 * @Author: lizhouwei
 * @CreateDate: 2018/4/7 10:33
 * @Modify by:
 * @ModifyDate:
*/
public class Chapter2_14 {
    public Node removeNode(Node head, int num) {
        if (head == null) {
            return null;
        }
        //当要删除的节点头部连续的几个的话，则都删除
        while (head != null && head.vlaue == num) {
            head = head.next;
        }
        Node pre = head;
        Node cur = head.next;
        while (cur != null) {
            if (cur.vlaue == num) {
                pre.next = cur.next;
            } else {
                pre = cur;
            }
            cur = cur.next;
        }
        return head;
    }

    //测试
    public static void main(String[] args) {
        Chapter2_14 chapter = new Chapter2_14();
        Link link = new Link();
        //构造链表
        for (int i = 10; i > 0; i--) {
            link.add(i);
        }
        Link.printLink(link.head);
        Node head = chapter.removeNode(link.head, 3);
        Link.printLink(head);
    }
}