js Jianzhi Offer 06. Print the linked list from end to beginning

Enter the head node of a linked list, and return the value of each node from the end to the beginning (return with an array).

输入：head = [1,3,2]
输出：[2,3,1]

/**
 * Definition for singly-linked list.
 * function ListNode(val) {
 *     this.val = val;
 *     this.next = null;
 * }
 */
/**
 * @param {ListNode} head
 * @return {number[]}
 */
var reversePrint = function(head) {
    
    
    // if(head == null){
    
    
    //     return [];
    // }
    // if(head.next == null){
    
    
    //     return [head.val];
    // }
    let temp = head;
    let res = [];
    while(temp){
    
    
        res.unshift(temp.val);
        temp = temp.next;
    }
    return res;
};