题解 | #判断一个链表是否为回文结构#

function isPail(head){
            let arr=[],res=[]
            while(head!=null){
                arr.push(head.val)
                head=head.next
            }
            res=arr.slice()
            arr.reverse()
            for(let i=0;i<arr.length;i++){
                if(arr[i]!=res[i]){
                    return false
                }
            }
            return true
        }