小金乌会发光－Z&M

摘要： Reverse a singly linked list.代码如下：the iterative solution：（c++）/** * Definition for singly-linked list. * struct ListNode { * int val; * ListNo... 阅读全文

摘要： Givenn, how many structurally uniqueBST's(binary search trees) that store values 1...n?For example,Givenn= 3, there are a total of 5 unique BST's. 1... 阅读全文

摘要： Invert a binary tree. 4 / \ 2 7 / \ / \1 3 6 9to 4 / \ 7 2 / \ / \9 6 3 1即反转二叉树，代码如下：/** * Definition for a bina... 阅读全文

摘要： Given a column title as appear in an Excel sheet, return its corresponding column number.For example: A -> 1 B -> 2 C -> 3 ... Z -> 26 ... 阅读全文

摘要： The count-and-say sequence is the sequence of integers beginning as follows:1, 11, 21, 1211, 111221, ...1is read off as"one 1"or11.11is read off as"tw... 阅读全文

摘要： 1、方便获取图标的网站： http://www.easyicon.cn/ 2、百度网盘搜索引擎： http://www.pan1234.com/ 3、鸡啄米：C++编程入门系列之目录和总结： http://www.jizhuomi.com/software/129.html 4、牛客网：http:/ 阅读全文

摘要： Find the total area covered by tworectilinearrectangles in a2Dplane.Each rectangle is defined by its bottom left corner and top right corner as shown ... 阅读全文

摘要： 要求：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 inte... 阅读全文

摘要： PHP经典面试题：（不断跟进补充中。。。）1、用PHP打印出前一天的时间格式是2009-02-1022:21:21(2分)echodate('Y-m-dH:i:s',strtotime('-1day'));或者$yesterday=time()-(24*60*60);echo'today:'.dat... 阅读全文

摘要： Given two numbers represented as strings, return multiplication of the numbers as a string.Note: The numbers can be arbitrarily large and are non-nega... 阅读全文