leetcode 剑指 Offer 22. 链表中倒数第k个节点

题目 双指针;

class Solution { public ListNode getKthFromEnd(ListNode head, int k) { ListNode quick=head; ListNode slow=head; while(k>1){quick=quick.next;k--;} while(quick.next!=null){quick=quick.next;slow=slow.next;} return slow; } }