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自动生成小学四则运算题目的程序心得
#include#include#includeint right=0;int wrong=0;void add(){int a,b,c;a=rand()%100;b=rand()%100;printf("请回答:\n\t\t %d + %d = ",a,b);scanf("%d",c);if(a+...
分类:其他好文   时间:2015-04-29 23:08:23    阅读次数:154
R Programming week 3-Debugging
Something’s Wrong!Indications that something’s not rightmessage: A generic notification/diagnostic message produced by the message function;execution ...
分类:其他好文   时间:2015-04-23 21:29:07    阅读次数:122
PHP正则表达式(常用的7个例子)
1、验证E-mail  用filer_var 比用正则匹配更加好 if (filter_var('test+email@ansoncheung', FILTER_VALIDATE_EMAIL)) { echo "Your email is ok."; } else { echo "Wrong email address format."; } 2、验证用户名(验证用户名...
分类:Web程序   时间:2015-04-20 09:38:00    阅读次数:146
Distinguish Business Exceptions from Technical
Distinguish Business Exceptions from TechnicalDan Bergh JohnssonTHERE ARE BASiCALLY TWO REASONS that things go wrong at runtime: technical problems that prevent us from using the application and busine...
分类:其他好文   时间:2015-04-19 13:14:32    阅读次数:109
Sublime Text Shortcuts
Keyboard Shortcuts - Windows/LinuxWarningThis topic is a draft and may contain wrong information.EditingKeypressCommandCtrl + XCut lineCtrl + ?Insert ...
分类:其他好文   时间:2015-04-13 18:34:12    阅读次数:158
strcpy and memcpy
1. Inconsist length.char a3[2];char *a = "Itis "strcpy(a3, a); It is wrong. a3 will be correct, but a is missing. memcpy(a3, a, sizeof(char)* 2); It w...
分类:其他好文   时间:2015-04-12 13:13:36    阅读次数:220
Android Studio 中 FAILURE: Build failed with an exception. * What went wrong: Execution failed for task ':compileDebugAidl'.的问题解答
Android Studio 中 FAILURE: Build failed with an exception. * What went wrong: Execution failed for task ':compileDebugAidl'.的问题解答完整的问题提示Gradle: FAILURE...
分类:移动开发   时间:2015-04-11 00:00:22    阅读次数:445
Android Studio常见问题 -- uses-sdk:minSdkVersion 8 cannot be smaller than version 9 declared in library
问题描述* What went wrong:Execution failed for task ':app:processDebugManifest'.> Manifest merger failed : uses-sdk:minSdkVersion 8 cannot be smaller than...
分类:移动开发   时间:2015-04-09 13:39:21    阅读次数:1062
nyoj-吝啬的国度
第一次刷图论,对存储什么的还不熟悉,这题用邻接矩阵太大,邻接表不知道怎么弄,还好vector来存可以节省很多空间。然后深搜,用一个p数组存数每一步的父结点,visit存储该结点是否访问。不过最后我vector没有清空,wrong answer了。#include #include #include ...
分类:其他好文   时间:2015-04-06 10:05:36    阅读次数:127
HDU3038 How Many Answers Are Wrong 【并查集】
How Many Answers Are Wrong Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 3145 Accepted Submission(s): 1202Problem Description TT and FF...
分类:其他好文   时间:2015-04-05 23:34:52    阅读次数:216
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