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[ACM] HDU 4884 TIANKENG’s rice shop (模拟)
TIANKENG’s rice shop Problem Description   TIANKENG managers a pan fried rice shop. There are n kinds of fried rice numbered 1-n. TIANKENG will spend t time for once frying. Because the pan i...
分类:其他好文   时间:2015-01-13 17:40:53    阅读次数:323
对象不能从 DBNull 转换为其他类型
SQL语句:select sum (datediff(second,Begin_Time,End_Time)) as 总时长 from 数据表这是我开始的程序:int 总时长=0;总时长=Convert.ToInt32(tbl.Rows[i]["总时长"]);提示错误:对象不能从 DBNull 转换...
分类:数据库   时间:2015-01-13 17:21:22    阅读次数:513
rvm 安装ruby报错
ruby-2.1.1 - #downloading rubygems-2.2.3 % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 0 0 0 0 0...
分类:其他好文   时间:2015-01-13 17:16:34    阅读次数:880
音视频开发平台数据对比
4G网络的普及,人们即时通讯的交流需求愈来愈强烈,近些年来,依托计算机技术、通信技术和网络条件的发展,集音频、视频、图像、文字、数据为一体通讯工具越来越多。市场上的通讯工具多数集成第三方的即时通讯功能模块进行二次开发,下面就例举国内有一定知名度的即时通讯开发软件。 腾讯通RTX 腾讯通RTX(Real Time eXchange)是腾讯公司推出的企业级即时通信平台。腾讯通RTX既提供实际产品用...
分类:其他好文   时间:2015-01-13 16:10:46    阅读次数:257
hdu 1003 Max Sum (贪心)
Max Sum Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 156188    Accepted Submission(s): 36520 Problem Description Given a s...
分类:其他好文   时间:2015-01-13 16:07:56    阅读次数:159
hdu 1257 最少拦截系统 (贪心)
最少拦截系统 Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 20766 Accepted Submission(s): 8213 Problem Description 某国为了防御敌国的导弹袭击,发展出一种导弹拦截系统....
分类:其他好文   时间:2015-01-13 15:57:23    阅读次数:135
Best Time to Buy and Sell Stock II
https://oj.leetcode.com/problems/best-time-to-buy-and-sell-stock-ii/Say you have an array for which theithelement is the price of a given stock on day...
分类:其他好文   时间:2015-01-13 14:14:12    阅读次数:100
Best Time to Buy and Sell Stock
https://oj.leetcode.com/problems/best-time-to-buy-and-sell-stock/Say you have an array for which theithelement is the price of a given stock on dayi.I...
分类:其他好文   时间:2015-01-13 14:08:51    阅读次数:132
LeetCode--Search in Rotated Sorted Array II
Follow up for "Search in Rotated Sorted Array": What if duplicates are allowed? Would this affect the run-time complexity? How and why? Write a function to determine if a given target is in the...
分类:其他好文   时间:2015-01-13 12:33:11    阅读次数:118
prologue epilogue
https://www.hackerschool.com/blog/7-understanding-c-by-learning-assemblyhttps://www.hackerschool.com/blog/5-learning-c-with-gdbLast time, Alan showed ...
分类:其他好文   时间:2015-01-13 12:10:16    阅读次数:243
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