题解 | #反转链表#
反转链表
https://www.nowcoder.com/practice/75e878df47f24fdc9dc3e400ec6058ca
/*
* function ListNode(x){
* this.val = x;
* this.next = null;
* }
*/
/**
* 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
* @return ListNode类
*/
function ReverseList( head ) {
// write code here
let p1 = head
let p2 = null
while (p1) {
let tem = p1.next
p1.next = p2
p2 = p1
p1 = tem
}
return p2
}
module.exports = {
ReverseList : ReverseList
};
