二维码(Two-dimensional code)是用某种特定的几何图形按一定规律在平面(二维方向)分布的黑白相间的图形记录数据符号信息的方式。现实生活中,二维码普遍存在我们的周围,例如:产品防伪/溯源、广告推送、网站链接、数据下载、商品交易、定位/导航、电子凭证、车辆管理、信息传递、名片交流、wifi共享等。
在代码编制上巧妙地利用构成计算机内部逻辑基础的“0”、“1”比特流的概念,使...
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其他好文 时间:
2014-07-08 20:07:51
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260
Designing a Class Interface
设计类接口
The Objective-C syntax for creating a class is very simple. It typically comes in two parts.
创建类的语法是很简单的,通常包括两部分。
The class interface is u...
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其他好文 时间:
2014-07-08 16:24:27
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168
[LeetCode]Remove Duplicates from Sorted Array...
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其他好文 时间:
2014-07-08 16:07:52
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192
Given n non-negative integers a1, a2,
..., an, where each represents a point at coordinate (i, ai). n vertical
lines are drawn such that the two endpoints of line i is at (i, ai) and (i,
0). Fin...
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其他好文 时间:
2014-07-08 14:21:56
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190
The digital root of a positive integer is found by summing the digits of the integer. If the resulting value is a single digit then that digit is the digital root. If the resulting value contains two or more digits, those digits are summed and the process ...
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其他好文 时间:
2014-07-08 14:12:32
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226
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.
Your algorithm should use only constant spac...
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其他好文 时间:
2014-07-08 13:46:26
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205
Implement an algorithm to find the kth to last element of a singly linked list.Classical "Runner" Technique of linkedlist/*Use two pointers, forward o...
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其他好文 时间:
2014-07-08 00:37:17
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315
SharePoint Tips about Permissions: What you need to knowI have been writing tips about SharePoint from last two years now. After a great popularity an...
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其他好文 时间:
2014-07-08 00:36:33
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262
Euclid's Game
Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)
Total Submission(s): 1880 Accepted Submission(s): 825
Problem Description
Two players, Stan...
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其他好文 时间:
2014-07-06 00:02:49
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253
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 O(log (m+n)).
有两个已排序的数组A和B,大小为m 和 n。
找出两数组的中...
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其他好文 时间:
2014-07-05 22:54:17
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244