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Leetcode | Divide Two Integers
Divide two integers without using multiplication, division and mod operator.这道题要AC也不容易,许多基础概念不懂。最后看了答案,自己再做也很难AC。还是要记住一些关键点才行:1. 负数的补码等于反码+1.所以负数取绝对值就...
分类:其他好文   时间:2014-05-10 06:52:22    阅读次数:380
hust 1102 Constructing Roads
Problem DescriptionThere are N villages, which are numbered from 1 to N, and you should build some roads such that every two villages can connect to e...
分类:其他好文   时间:2014-05-10 02:28:50    阅读次数:374
Leetcode | Median of Two Sorted Arrays
There are two sorted arrays A and B of size m and n respectively. Find the median of the two sorted arrays. The overall run time complexity should be ...
分类:其他好文   时间:2014-05-09 23:26:18    阅读次数:353
Leetcode | N-Queens I & II
N-Queens IThen-queens puzzle is the problem of placingnqueens on ann×nchessboard such that no two queens attack each other.Given an integern, return a...
分类:其他好文   时间:2014-05-09 20:34:01    阅读次数:335
Summation of primes
是我算法不对,还是笔记本CPU太差?我优化了两次,还是花了三四个小时来得到结果。在输出上加1就是最终结果。The sum of the primes below 10 is 2 + 3 + 5 + 7 = 17.Find the sum of all the primes below two mil...
分类:其他好文   时间:2014-05-09 16:20:08    阅读次数:295
hust 1009 Sum the K-th
题目描述N integers are arranged on a circle clockwise. Given two integers M and K. For each position, you should take M continuous integers on the left an...
分类:其他好文   时间:2014-05-09 10:30:49    阅读次数:350
Bluetooth
Android provides a default Bluetooth stack, BlueDroid, that is divided into two layers: The Bluetooth Embedded System (BTE), which implements the core...
分类:其他好文   时间:2014-05-09 10:18:47    阅读次数:518
Leetcode: Merge Two Sorted Lists
一点小错,两次过,基本思想是先比较头元素,哪个小就在哪个list的基础上插入,需要考虑两种不同的结束方式 1 /** 2 * Definition for singly-linked list. 3 * public class ListNode { 4 * int val; 5 *...
分类:其他好文   时间:2014-05-09 09:21:59    阅读次数:273
LeetCode OJ - Gray Code
这道题就是找规律啊!!!想想啊,11和10是可以连续的,那么10和11也是可以连续的。下面是AC代码: 1 /** 2 * The gray code is a binary numeral system where two successive values differ in on...
分类:其他好文   时间:2014-05-09 07:38:17    阅读次数:325
经典书Discrete.Mathematics上的大神
Discrete.Mathematics.and.Its.Applications这本书是离散数学的经典书籍,好好读一读,系统化一下自己的知识。 书本上会有介绍很多杰出的数学家,如高斯, 这样名垂青史的大人物。 不过读到263页的时候被一个年轻的脸孔震惊到了,看起来还像个中国人。名字叫:TERENCE TAO  于是细读一下,越读越是震惊,然后网上一查,才知道,原来人家早已大名鼎鼎,不过是本...
分类:其他好文   时间:2014-05-09 06:21:45    阅读次数:327
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