输入一个链表,输出该链表中倒数第k个结点。
1 /* 2 public class ListNode { 3 int val; 4 ListNode next = null; 5 6 ListNode(int val) { 7 this.val = val; 8 } 9 }*/ 10 public class Solution { 11 public ListNode FindKthToTail(ListNode head,int k) { 12 13 if(head == null){ 14 return head; 15 } 16 int count = 0; 17 ListNode list = head; 18 19 while(list != null){ 20 count++; 21 list = list.next; 22 } 23 if(k > count){ 24 return null; 25 } 26 27 ListNode node = head; 28 for(int i = 0; i < count -k; i++){ 29 node = node.next; 30 } 31 return node; 32 33 } 34 }
原文地址:https://www.cnblogs.com/linliquan/p/11305243.html
时间: 2024-11-07 22:58:37