摘要： 题目： Reverse a singly linked list. click to show more hints. Hint: A linked list can be reversed either iteratively or recursively. Could you implement 阅读全文

摘要： 题目： Remove all elements from a linked list of integers that have value val. ExampleGiven: 1 --> 2 --> 6 --> 3 --> 4 --> 5 --> 6, val = 6Return: 1 --> 阅读全文

摘要： 题目： Given a sorted linked list, delete all duplicates such that each element appear only once. For example,Given 1->1->2, return 1->2.Given 1->1->2->3 阅读全文

摘要： 题目： Given a linked list, determine if it has a cycle in it. Follow up: Can you solve it without using extra space? 让head不断走一步，如果cur不为null，走两步，这样如果存在cy 阅读全文