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poj 1604 Just the Facts
Just the Facts Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 8781   Accepted: 4659 Description The expression N!, read as "N factorial," denotes the prod...
分类:其他好文   时间:2014-11-04 22:44:09    阅读次数:167
[C++] Nested Radical Constant
做高数助教被天煞的大一学生坑了,发现是个未解问题,没有解析解。。用C搞了下,就是这样。。。No closed-form expression is known for this constant (Finch 2003, p.8; S.Plouffe, pers. comm., Aug.29, 20...
分类:编程语言   时间:2014-11-04 19:38:00    阅读次数:186
单元测试断言汇总
XCTFail(...) 任何尝试都会测试失败,...是输出的提示文字。(后面都是这样) XCTAssertNil(expression, ...) expression为空时通过,否则测试失败。 expression接受id类型的参数。 XCTAssertNotNil(expression, ...
分类:其他好文   时间:2014-11-03 16:38:44    阅读次数:197
BZOJ 1385: [Baltic2000]Division expression
题目1385: [Baltic2000]Division expressionTime Limit:5 SecMemory Limit:64 MBDescription除法表达式有如下的形式: X1/X2/X3.../Xk 其中Xi是正整数且Xi 2 #include 3 using namespa...
分类:其他好文   时间:2014-11-02 23:54:33    阅读次数:246
360Webscan Bypass
来到select正则:?1\||\b(alert\(|confirm\(|expression\(|prompt\(|benchmark\s*?\(.*\)|sleep\s*?\(.*\)|load_file\s*?\()|]*?\bon([a-z]{4,})\s*?=|^\+\/v(8|9)|\b...
分类:Web程序   时间:2014-11-02 23:51:07    阅读次数:337
Timer理解
Timer的官方描述是:A facility for threads to schedule tasks for future execution in a background thread. Tasks may be scheduled for one-time execution, or for repeated execution at regular intervals. 意思就是...
分类:其他好文   时间:2014-11-01 17:52:47    阅读次数:169
Oracle 11g新特性之--虚拟列(Virtual Column)
Oracle11g新特性之--虚拟列(VirtualColumn)Oracle11G虚拟列VirtualColumn介绍Oracle11G在表中引入了虚拟列,虚拟列是一个表达式,在运行时计算,不存储在数据库中,不能更新虚拟列的值。定义一个虚拟列的语法:column_name[datatype][GENERATEDALWAYS]AS[expression][VIRTUAL]..
分类:数据库   时间:2014-10-31 19:21:31    阅读次数:236
设定网页最小最大宽度和高度(兼容IE6)
http://www.cnblogs.com/double-bin/archive/2011/12/19/2293093.html/* 最小寬度 */.min_width{min-width:300px; /* sets max-width for IE */ _width:expression(d...
分类:Web程序   时间:2014-10-31 15:26:38    阅读次数:245
[Leetcode] Evaluate Reverse Polish Notation
Evaluate the value of an arithmetic expression inReverse Polish Notation.Valid operators are+,-,*,/. Each operand may be an integer or another express...
分类:其他好文   时间:2014-10-31 15:06:20    阅读次数:260
区间DP [POJ 1141] Brackets Sequence
Brackets SequenceDescriptionLet us define a regular brackets sequence in the following way:1. Empty sequence is a regular sequence.2. If S is a regula...
分类:其他好文   时间:2014-10-31 01:09:37    阅读次数:227
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