题解 | #链表中倒数最后k个结点#
链表中倒数最后k个结点
http://www.nowcoder.com/practice/886370fe658f41b498d40fb34ae76ff9
import java.util.*;
/*
* public class ListNode {
* int val;
* ListNode next = null;
* public ListNode(int val) {
* this.val = val;
* }
* }
*/
public class Solution {
/**
* 代码中的类名、方法名、参数名已经指定,请勿修改,直接返回方法规定的值即可
*
*
* @param pHead ListNode类
* @param k int整型
* @return ListNode类
*/
public ListNode FindKthToTail (ListNode pHead, int k) {
// write code here
ListNode cur =pHead;
int count = 0;
while(pHead!=null){
if(count>k-1){
cur = cur.next;
}
pHead=pHead.next;
count++;
}
if(count<k)return null;
return cur;
}
} 快慢指针,让一个迟几步走
