题解 | #反转链表#

/*
 * 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 obj = null;
    while (head) {
        let resver = head;
        head = head.next;
        resver.next = obj;
        obj = resver;
    }

    return obj;
}
module.exports = {
    ReverseList: ReverseList,
};