摘要：
Given a singly linked list, determine if it is a palindrome.Follow up:Could you do it in O(n) time and O(1) space?题目意思： 给定一个单链表，判断它是不是回文串 进一步思考： ... 阅读全文
摘要：
Write a function to delete a node (except the tail) in a singly linked list, given only access to that node.Supposed the linked list is1 -> 2 -> 3 -> ... 阅读全文
摘要：
Given two stringssandt, write a function to determine iftis an anagram ofs.For example,s= "anagram",t= "nagaram", return true.s= "rat",t= "car", retur... 阅读全文