摘要： 【题目】 将链表组成的数相加 leetcode2变式，2题是高位在后，现在是高位在前节点 You are given two non-empty linked lists representing two non-negative integers. The most significant dig 阅读全文

摘要： 【题目】 反转链表是之后很多题的基础 把链表12345反转成54321 Given the head of a singly linked list, reverse the list, and return the reversed list. Example 1: Input: head = [ 阅读全文

摘要： 【题目】 将两个用list存储的数字相加，返回相加后的值 You are given two non-empty linked lists representing two non-negative integers. The digits are stored in reverse order, 阅读全文