摘要： 题目： Given a linked list, swap every two adjacent nodes and return its head. For example,Given 1->2->3->4, you should return the list as 2->1->4->3. Yo 阅读全文

摘要： 题目： Write a program to find the node at which the intersection of two singly linked lists begins. For example, the following two linked lists: 判断两个链表是 阅读全文

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

摘要： 题目： Given two strings s and t which consist of only lowercase letters. String t is generated by random shuffling string s and then add one more letter 阅读全文

摘要： 题目： Write an algorithm to determine if a number is "happy". A happy number is a number defined by the following process: Starting with any positive in 阅读全文

摘要： 题目： Given two strings s and t, write a function to determine if t is an anagram of s. For example,s = "anagram", t = "nagaram", return true.s = "rat", 阅读全文

摘要： 题目： Given a pattern and a string str, find if str follows the same pattern. Here follow means a full match, such that there is a bijection between a l 阅读全文