<剑指offer> 第10题

public class Tenth {
    public class ListNode{
        int val;
        ListNode next;
    }

    public static ListNode removeNode(ListNode head, ListNode toBeDeleted){
        if(head == null || toBeDeleted == null){
            return head;
        }

        //待删除节点为头节点
        if(head == toBeDeleted){
            return head.next;
        }

        //删除多个节点中的某个节点
       ListNode pre = head;
       while(pre.next != toBeDeleted){
           pre = pre.next;
       }
        //待删除的为尾节点
        if(toBeDeleted.next == null){
           pre.next = null;
        }else{
           //待删除的节点在链表中
            pre.next = toBeDeleted.next;
            toBeDeleted.next = null;
        }
        return head;
    }
}