/*
* 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
if(pHead == null || k == 0){
return null;
}
ListNode pre = pHead , cur = pHead ;
for(int i = 0 ; i < k-1; i++){
if(cur.next == null ){
return null;
}
cur = cur.next;
}
while(cur.next!= null){
cur = cur.next;
pre = pre.next;
}
return pre;
}
}