题目如下: The K-P factorization of a positive integer N is to write N as the sum of the P-th power of K positive integers. You are supposed to write a program to find the K-P factorization of N for any positive integers N, K and P. Input Specifi…
Error - Found cycle in the ListNode
刷力扣时遇到这个错误,节点成环 自己摸索了一下发现确实形成循环,原题是206反转链表,我用的是栈,先将链表节点依次进栈,然后依次出栈链接,构成反转。但是我忽略了第一…
无限循环 1.需要套2个foreach 2.2个foreach结构一样 纯代码获取数据 public function CycleData($parent_id0){$where[parent_id] $parent_id;$res $this->m->where($where)->field(id,name)->select();foreach($res as $k>$v){$result[$v[id]][id] $v[id];$r…