题解 | #倒数第k头牛#
倒数第k头牛
https://www.nowcoder.com/practice/1a1f85ae84b442b3b33727684141104d
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 head ListNode类
* @param k int整型
* @return ListNode类
*/
public ListNode find_kth_cow (ListNode head, int k) {
// write code here
int count=1;
ListNode root=head;
while(root!=null){
count++;
root=root.next;
}
count=count-k;
while(count>1){
head=head.next;
count--;
}
return head;
}
}
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