/**
* Definition for singly-linked list.
* function ListNode(val, next) {
* this.val = (val===undefined ? 0 : val)
* this.next = (next===undefined ? null : next)
* }
*/
/**
* @param {ListNode} head
* @return {ListNode}
*/
var reverseList = function (head) {
if (head === null || head.next === null) return head
const newHead = reverseList(head.next)
head.next.next = head
head.next = null
return newHead
};欢迎通过「邮件」或者点击「这里」告诉我你的想法
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