链接: https://oj.leetcode.com/problems/rotate-list/


/**
 * Definition for singly-linked list.
 * public class ListNode {
 *     int val;
 *     ListNode next;
 *     ListNode(int x) {
 *         val = x;
 *         next = null;
 *     }
 * }
 */
public class Solution
{
	public ListNode rotateRight(ListNode head,int n)
	{
		int l=0;                                    //链表长度
		ListNode pos=head;
		if(pos==null)
			return pos;
		while(pos.next!=null)	
		{
			l++;
			pos=pos.next;
		}
		l+=1;
	    pos.next=head;                              //头节点
		pos=head;
		for(int i=0;i<l-n%l-1;i++)
		{
		    pos=pos.next;
		}
		
	    head=pos.next;
	    pos.next=null;
		return head;
		
	}

};