关于php:Add-Two-Numbers-的php解法

/** * Definition for a singly-linked list. * class ListNode { *     public $val = 0; *     public $next = null; *     function __construct($val = 0, $next = null) { *         $this->val = $val; *         $this->next = $next; *     } * } */class Solution {    /**     * @param ListNode $l1     * @param ListNode $l2     * @return ListNode     */    function addTwoNumbers($l1, $l2) {        $result=(is_null($l1)?0:$l1->val)+(is_null($l2)?0:$l2->val);        if($result>=10){            $result-=10;            if(is_null($l1->next)){                $l1->next=new ListNode;            }            $l1->next->val+=1;        }        $node=new ListNode($result);        if(is_null($l1->next) && is_null($l2->next)){            return $node;        }        $node->next=$this->addTwoNumbers($l1->next,$l2->next);        return $node;    }}

集体博客：https://www.gwlin.com/posts/5717